Mustang battery drain fix I also purchased some battery terminal pads for 5 bucks and put a little bit of dialectric grease on both terminals. For now I 1994 mustang gt: just bought, had dead batterybatt. 6-12. My Ecoboost 2015 has 50K miles and started having some electrical issues short after replacing the battery. Something on fuse line “D” I’m assuming is still on when I shut the car off and it drains my battery. Or the alternator. This may be caused by the operation of the antilock brake (ABS I purchased my 2020 Mustang GT March 2021 with only 900 miles. I Luckily, a new clamp was only 10 bucks at Autozone. 5V or better, if not the battery is likely bad; have it load tested at an auto-electric shop--NOT a FLAPS; Now, with the engine idling: You test battery drain due to current using digital volt-ohm meter that has the ability to measure DC current; I suggest a minimum of 10 amps. purchased new one still draining | Find answers to your 1998 Ford Mustang question from certified mechanics and auto experts. 3 days sitting it dies but this time was different. Check the battery terminal connectors, make sure they are clean and tight; Check the voltage across the negative and positive battery connectors, NOT the battery posts, while cranking the engine--it should be 10. 1998 Ford Mustang - Battery draining on 98 Ford mustang. 6V on the battery is 100% charged. Hope this helps at least a little. I have a 1997 mustang gt with 70,000 miles last year my battery died due to a heavey winter storm that covered the entire car and was never able to fix after one week, anyway the following week I decided to just put in a new optima battery as I previously had a new alternator and starter the car started like a champ and it has been garage stored since last december and it is not a Feb 4 2021 1707 - 2020 Mustang GT500 - Battery Drain Concern When Applying Electric Parking Brake After Turning Ignition Off: Some 2020 Mustang GT500 vehicles may exhibit a battery drain concern when the customer applies the electric parking brake after turning the ignition off. e. #6 indicates Instrument Cluster / Powertrain Control Module. Using a test light and pulling each fuse to check for the drain, the PCM and Instrutment Cluster fuse sent the light off. Replaced the diodes in the alternator and the problem went away. Using a multimeter the voltage drops at night from about I had a parasitic drain on my 2017, and after replacing the battery twice, and using a trickle charger, we found that the ground connection was loose. In my experience, the battery was only one year old but had been damaged by the parasitic draw of constantly draining and re-charging. Shut everything off (lights, close doors, etc. The battery may have been able to handle the increase in performance at the time but overtime the battery drain issues created by this behavior would become significant. 2015 Mustang GT Performance Package, 401a, 6 speed manual Ruby Red Forgestar Brushed Titanium CF10 wheels 03 Mustang GT (Parasitic) Battery Drain Fix. This article applies to the Ford Mustang GT (1996-2004). You need a strong battery with a good charge to spin the starter and get those Pony's running. well, the battery minder seems like a minor fix for a major problem. I am using an MSD 6AL box, and a Powermaster starter. Premium Auto 2007 Mustang GT Premium Auto 2013 Mustang V6 Premium Auto Convt. Ford Battery Monitoring System Explained In Depth By Technician (fordauthority. Your best bet is to do voltage drop tests to find what is draining your battery. diagram says 'not used' however. (I should test this out of 03 Mustang GT (Parasitic) Battery Drain Fix Hello, I am seeing a lot of mustangs are having battery draining issues and I wish to share some simple solutions found while working on a friends 03 GT 4. I hooked an ammeter inline and measured up to TWO 1967 Mustang Fastback 289 4-Speed 1991 Toyota MR2 2. I have the mach 460 system. My fix was turn the key off and manually power off the radio before opening the door. February 21, 2021 by Frank Thompson. Hope your issue gets resolved, by the way the drain does destroy batteries. News. Disconnect the alternator and see if thats it. Joined Oct 28, 2019 it will drain my battery. Never had a If I don’t start my 04 Mustang Mach I in two days, the battery is dead. I just know that's it's the Shaker 500 Any ideas folks? Mar 1, 1990 Mustang GT All the usual goodies, would have a supercharger if my wife didn't have a wedding ring. Need for Green Start with a good battery. So far this summer the truck has sat for 2-3 weeks at a time with absolutely no drain. 4 turbo 5-Speed 2005 Mustang Conv. Not enough to cause a fire but enough to drain the battery completely in a few days to a week. I just purchased a 2006 Shelby GT-H with 4700 miles, and cannot leave it for more than three days without coming back to a dead battery. For several months now, my 66 Mustang Coupe has been having troubles keeping a battery charged. Add your complaint? Back; Crash Tests My 2006 Mustang GT convertible is now on its second Ford battery under warranty for about 3 months now. com and carefully study ALL the information under the Heading Chassis Welcome to the battery drain club. I had installed my UPR In my 2015 GT, the battery would die within 2-3 weeks if the car was not driven. My guess is the drain is either the Shaker or the Passenger Window, which once unrolled completely down when I unlocked the Having trouble keeping your battery charged? Finding that you vehicle will not start every morning due to low battery voltage? You may be the victim of PARAS Find free step-by-step repair instructions, manuals, schematics, community support, and other DIY resources. So if you keep those amps going you will need a battery tender. OK so my SJB is NOT going bad (yet). before finishing instulatin of new batt checked battery drain. After going through everything under the sun I came back to the alternator and that was what it eneded up being. A forum community dedicated to Ford Mustang owners and enthusiasts. Joined Jun 22, 2021 Threads 1 Messages 2 Reaction score 0 Location FL First Name Jeff Vehicle(s) 2020 Mustang GT I charged the battery to 90% on Friday night. just bought, had dead battery. 08amp thru fuse 1-59 and . No More Parasitic Battery Drain! Another fix can be to change the small pulley on the alternator to a larger pulley so the alternator does not spin too fast, putting too much energy through the diodes can cause a charging system to act a fool. Wouldn't budge out of park. My Ford dealer had no clue except they said it was a bad battery. . Since it is a 65, did you disconnect the 'S' terminal on the alternator, or just the big wire to the solonoid (battery pos), the 'S" terminal on the alternator is the stator winding, when the engine is running, it supplys 10 volts to the regulator to turn it on, when a diode gets leaky in the alternator, the stator gets battery voltage and turns the regulator on without the engine Unfortunately, a new problem developed this time around - parasitic battery drain. Have your battery tested with a load tester. Took it to the local auto parts store for diagnostics on the battery and alternator, but everything was good. Browse Categories Answer Questions . After several minutes, my drain current went down to 11-15 mA, fluctuating to 15mA periodically as the security light would flash. November 2021 (getting cold here in MN) it started eating batteries. After one week (not using the car) battery has only 8,3V. Battery draining. but I decided to post here today because of a problem that my repair guys can't seem to fix. Battery Draining . but not sure on the fix. i would still unplug the cell phone. battery drained for no reason . hellou, I noticed battery drain problem on my stang 2015 GT. Battery Drain? Thread starter Mobolis; Start date Aug 5, 2020; Aug 5, 2020 #1 M. Although, without a good battery, it's just metal, wire and plastic. All ready having problems with battery drain. This is hot w/key off with minimum current needed to power alarm, and store radio stations and A parasitic power draw is when something is drawing current from your Ford Mustang’s battery after you turn the vehicle off, like an interior light or a malfunctioning component. 00 diagnostics test and no go. Donations to suppo 2006 Tungsten Mustang GT 5-speed Engine: Shaker hood scoop, C&L CAI, 93 Octane Tune, Steeda UDP, Meizere electric waterpump, CMDP's, Optima Red Top battery Transmisson: Steeda Tri-ax DriveTrain: Spyder Aluminum Drive Shaft Exhaust: Flowmaster Mufflers Supension: Tokico D-specs,Eibach prokit springs,Eibach swaybar kit,BMR adj. Replaced both the battery and alternator. Thread starter Lime05GT; Start date Feb 5, 2009; 1; 2; Next. This happened even with a new battery. 1. 6L, and MSD COP's From what I understand if you leave the radio on the amps stay on and drain the battery. So there's a good data point for "normal" current drain: 10-15 mA. So in the rain, needed to pop the frunk and jump it and brought it to the dealer hoping for a fairly quick fix. For some odd reason the car keeps dying over night it’s happened about 6-7 times within two months and needs to be jumped. Once I found out it was the stereo draining the battery I found a simple Every 25,000 kwh the battery dielectric needs to be fully flushed and the anodes and cathodes need a deoxidize service. I drive the car about once a week. Here’s how: Remove the negative cable from your Mustang’s battery and u I had the issue with the battery draining after the car sat for a couple of days. 45V is 75% charged (for reference). Next Last. 2012 Mustang GT Convertible Roush Exhaust 2003 Mustang GT (Sold) 1999 35th Anniversary V6(SOLD) Save Share No fix. A couple of weeks ago the subs quit working then my battery died a week later. But I still don't know what's wrong or even how to fix it. 36k and while driving home last night the radio shut off and a "battery Hello, I’ve had my 2000 v6 for about a year and this started happening recently. DAVIDSAUN MEMBER; 1998 FORD MUSTANG; 6 CYL; 2WD; MANUAL; 89,000 MILES; Hi, and thanks in advance for any help! normaly if left overnight its fine, but if left for 2 days without being started the battery is drained. Or a combination of the above. 4) Connect red lead to Neg Battery cable. I have to jump my car to get it running but it still drives fine. After doing my own research I realized that the radio and alarm drain the battery when the car is off, obviously that alarm would stay on but to drain a battery in 24hrs, its a ford manufacture problem which they will never I had my dealer replace the battery under warranty and the issues never occurred again before I traded it in for my mustang. A sub dedicated to the world's most popular pony car. I tried to check power take-off Menu. KB 2. Joined Sep 1, 2007 Posts 18 Reaction score 0 Location Hewitt, TX. take it back and have them fix it. 2 Answers . Thread starter . 1994-2004 Ford Mustang. Or it might be the voltage regulator. I'm a retired with Toyo tires commercial electrician and havent found it yet. I'm guessing by $400 you mean the full battery cable, past the clamp. Make sure your dome lights are not on and the CD player is not going bezerk. Customer: i have a 04 mustang, the battery keeps draining fast. Not a parasitic drain problem -- a dead, destroyed Go to Mustang r/Mustang. Issues: tail light does not go out, engine button does not turn off and when my car reaches 50 miles/h speed start loosing power (requires to keep pumping the accelerator I have a 2005 Ford Mustang with 37,000 miles & have been having problems with the battery going completely dead overnight. Thread starter jdc; Start date Jun 22, 2021; Watchers 11; 1; 2; Next. Unless you make efforts to drive it regularly, the only solution is a The simplest way to get an idea is using an automatic ~1 Amp trickle charger. Hey Everyone! I am having a phantom draw on my battery with my 98 GT. 2) Disconnect Neg Battery cable. cable from the battery to stop the drain until I could find the source. To fix this issue, you’ll need to test for a parasitic power draw. My battery will die after 3-4 days of not using the car. The battery is also only five months old, so it seems unlikely that it's a bad battery. 2005+ Mustang GT 4. It charged for 15 minutes and then reported a "Battery Drain". 570mA, pulled the there is no power to start my 2006 mustang I believe one of the doors was left open for a while draining the - Ford 2006 Mustang question. 26VDC at idle, and there are no warning lights when it's dead. So if you have charging issues and have an alternator 2018 Mustang GT, Magnetic, PP1, 401A, MR, VE, A10, shaker audio Aug 24, 2019. You can do it! We show you how. The 2006 Ford Mustang has 28 problems reported for battery draining continually. Question I have a 2020 GT PP2 - the battery dies if I don’t drive it for 3 days or more. Thoughts? It's a 2006. Do what Cory said. (Not a fan of lighter socket charging on these computerized cars) Measure battery voltage with the negative cable disconnected. Before I do, is there anything else you want him to know? Same problem with 2007 mustang I also bought a 2007 mustang and having the same issue as Becky, wont start when its cold out due to something draining the battery. 03 Mustang GT (Parasitic) Battery Drain Fix Hello, I am seeing a lot of mustangs are having battery draining issues and I wish to share some simple solutions found while working on a friends 03 GT 4. Average repair cost is $290 at 43,150 miles. Why is my Battery Draining. My car won't replacing a fuse will not fix a drain issue -- removing the fuse will temporarily stop the drain (because the circuit is shut off, no current can flow, so there can be no drain) but when you put a new fuse back in, the drain will be back -- because the issue is still there, since you have not found it or fixed it I have a 1999 Mustang GT for about a year now I've been dealing with a power drain. turned out it wasn't a drain, but the car pulling power for lights, and to prep the car for starting up. 0 Score. How do I Hello I recently had a kenwood radio installation done on my mustang 2015 Notice that after the installation my car battery is draining after not being turn on for a day I’m guessing the radio is taking a lot of power for the car not sure where to look for a wrong wire or fuse. I heard a high pitched hissing/whistle sound at low volume For about the past year the car has had a dead battery every couple times I try to drive it. What is hooked up to fuse 7? Mechanic's Assistant: Okay, I'll connect you to the mechanic to help find that for your Saleen Mustang. This may be due to the software level of various modules such as the GWM, APIM and DSM. A car battery should hold its charge for a few months before needing to be recharged, if not the battery has A subreddit for all things related to the Ford Mustang Mach-E. Search Fixya. 2006 Ford Mustang; Ford Mustang Car and Truck battery drain fix reverse light fix View All » Customer: I have a 2003 Ford Mustang that the battery keeps draining on. I heard a high pitched hissing/whistle sound at low volume Either you have somethin really small that is barely draining the battery, or you have a dying battery that is slowly losing it's charge. I agree, the parasitic drain with this car is unbelievable. I have a 2003 Ford Escape that keeps blowing the F27 fuse (room). 6ltr. Owner/Operator of Highway Auto Repair, a mobile automotive repair business. Battery drain and radio problems. The car is locked and dead. It takes around 5-6 hours for the battery to fully drain. Here's a quick reference on how to diagnose battery drain, please realize you should only be . Took the jump starter off and went to pull out and wouldn't go in gear. Mobolis Junior Member. Thanks to this post I fix it. while parked, that keeps some of the computers awake and increase the draw. I purchased a new battery about a month ago and the problem hasn’t stopped. 6L Tech . Every winter I have to unhook my battery when I get out so it starts the next day. I had some battery drain issues and had read about the shaker causing them, then one day I was underneath the car installing an off-road H I have a parasitic drain that drains my battery within 24 to 30 hours. Took it to dealer for diagnosis and they say the instrument cluster has gone bad ($1300 repair) causing the drain. Now the battery will completely discharge after only 24 hours. 75 days (45aH/0. I had a reading of . Or a problem with a big-a$$ aftermarket sound system. has 5. When I got home, I took out the battery, battery box, and cleaned everything up real nice. I used the following procedures to check fuse draw - 1) Turn off car, open car doors and wait until lights turn off by themselves. When the engine won't start, the battery should be your first stop. Small things like glove box or courtesy lights are often the culprits. 3) Set Multimeter to read Amps (10AmpMax). The drain was just the computer(s) going through their routines before going into a "sleep" mode. So I’ve got an 06 mustang gt on bags, and the battery will be completely dead in the morning if I don’t leave it on a charger. In a quiet area, key switched off, hood up, Listen carefully close to alternator. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY 2007 Mustang V6 Battery Drain Questions. I 2nd bad battery. I have a post form two weeks ago where chased a drain. But my car if I try to listen to the radio while I wash it after about three hours of cleaning. I disconnect the batteries after I park it for the night. After a jump, it runs fine with a charging voltage of 14. Hi everyone. The problem started about two weeks ago, then it was fine for a week, then this past week it started doing it again, i. It has a drain. You need to have a battery drain test done something in car is staying on with key off. Battery Parasitic Drain Repair. I replaced the battery but it drains within a week. Dont leave key in the ignition. Feb 5, 2009 #1 Lime05GT Legend Limer. They said the 12v battery is I put my charger on for a 10 minutes and it fires up. This means that users must stay informed about the total capacity of the battery in order to correctly Battery Drain - 66 Mustang. ive left my radar det on over night lots of times, but it doesnt drain the battery. Mustang s197 Tech Forums. On Saturday, I drove 130 miles and had an estimated range left of 60 miles. Yeah 2 battery's and $89. What is the best way to trace down where drain is coming from?:shrug: Any help or ideas is much appreciate 2001 Mustang Bullitt. Circuit and compnent that is draining battery. FYI, 25,000 kwh usually takes 70,000+ miles, so that's why you rarely see this fault, most Mach E's haven't reached that many fully battery cycles (about 325-350). 💬 Discussion Found my car (bought at the end of December) totally unresponsive yesterday morning. I pinpointed the draw to the radio but I am not sure where to go from there. I heard a high pitched hissing/whistle sound at low volume 12. I have no radio, dome lights or door locks. From online research, pretty sure my rear amps are causing the drain/death. The engine in your Ford Mustang GT is a thing of beauty. Plugged the car into my Type 2 charger. My shaker 500 would randomly cycle through CD’s with the ignition off. Current draw will determine if the battery is seeing parasitic loss at a high enough level to drain the battery in that period of time or if the alternator is actually failing and not keeping up Do a search on 2005 mustang battery drain and you will find a thousand unhappy owners who come back to a dead battery after only four days of being parked. I had this problem on the Shelby about 10 years ago. Finding a battery drain can be a long drawn out pain. Recently my 2002 Ford F350 started battery drain. Still happening. The Battery has been draining, and it will only start when jumped. 05 amp draw on a battery so this just shows you how to begin th I have a 98 mustang gt. I This after over 2 years of no starts. The battery is new. Is there a. 1 of 2 Go to page. 3 amp draw. There’s TECHNICAL SERVICE BULLETIN 25-2058 12-Volt Battery Drain 25 February 2025 Model: Ford 2021-2023 Mustang Mach-E Markets: Canada, USA Issue: Some of the vehicles listed in the Model statement above may exhibit a 12-volt battery drain. 2006 Torch Red GT. Give the battery a good charge. I agree, the parasitic drain with this car is First clean the battery cable ends and battery posts. 3 dealerships said nothing is wrong with it, but I know its not my imagination. TFI module wiring for 94-95 Mustang GT Repair Guides | Understanding And Troubleshooting Electrical Systems | Basic Electrical Theory | AutoZone. I'd go to start it and nothing, battery was under 3 volts and nothing would come on much less the starter. Forums. there will always be some battery drain, the security system uses power( little red flashing light on the cluster) and ya, the power outlets stay hot. Luckily, the auto parts store warranteed the battery so I was able to start with a fresh battery. disconected alt, pulled all fuses in car and under hood, checked for li Mustang Battery Drain Fix. battery drain 1994 mustang gt. jdc New Member. the mechanic found there is a drain from the fuse 7 in the engine fuse box. Or something else. When I hop Howdy all. 12. 2020 Rapid Red eco premium, MBRP race cat back, K&N panel filter in stock box with GT inlet resonator & AFE intake tube, CVFab black Battery Drain Problem Pulling all fuses from the fuse panel of the smart junction box does not interrupt the current flow. Pulled individual fuses, no problem. If the trickle charger can keep the battery full, chances are there is not a parasitic draw. 718 Satisfied Customers. 1966 Mustang Fastback Restomod under construction. How to Find a Parasitic Battery Drain: 9 Steps (with Pictures) Battery was load tested? Anyway, despite the test, battery might be weak/dying. ), and disconnect the negative terminal of the battery from the battery. GHIG 2019 Mustang GT Premium Auto Convt. Shaker 500 is draining my battery :- I can't use my Shaker 500 but at least my battery won't drain. We've replaced the battery, alternator, voltage regulator, and after-market alarm system. Started and died but started right back up and stayed running. Last year I had to unplug the battery to keep it from draining. simple fix is to turn if off by pressing the button, before you turn off the car, like he said Always kept the battery on a trickle charger. Battery died. My 2008 V6 Mustang has developed an issue where it drains the battery overnight. com) BD . Fully charged battery should read 12. The car is garage kept, after approximately 4 days I would receive a message of car I have a 2012 v6 stang, but experiencing an issue with the battery draining overnight. Tried to open the frunk per manual instructions, but no luck. It has the optional Shaker 1000 system. Hey guys I recently bought a 2018 mustang Gt PP1 10 SPD FBO and absolutely love it. I only use my car for weekends, and I don't care if it has a radio. I 1998 Ford Mustang slow battery drain. 8 trac-loc w/3:73 gears, logo'd trunk mat, trunk lid storage organizer. Thread starter #1 I have been having intermittent dead battery issue. Started checking fuses and found #8 inside car blew. Almost to the point where it won't crank up. After installing an automatic battery disconnect (which works great, it shuts the battery off if it falls below 12v so you have enough juice to start it) I recently pulled the fuse for the radio and the battery has remained charged ever since. D. If you don't lock the doors and put the key away, the car will also drain the battery. I know we are looking at 100 mA of current which is not a lot, but would drain a 45aH battery from full charge to dead flat 0 in 18. Save Share This was one stubborn Mustang to get to act up and then would just stop acting up The struggle of intermittent parasitic battery drains. This feeds the radio, courtesy light, clock, instrument cluster, and alarm. If it sat for more than a couple of days it drained the battery. Go. I have a battery drain where the batery lasts 5-6 days undriven, and using my multi, i determined it was tied to #6 40A fuse under the hood. Test all of the extra things you added that would put a load on the battery first, then go to what was there stock. 100A*24hrs = days to drain at 100mA draw). Car gets towed to the dealer 07 Mustang V6, GT 19'' wheels, Bullitt suspension & brakes, Dynomax dual exh w/GT takeoffs, Eleanor style grille, Shelby rear spoiler, CS/GT bumpers, SHR insert, side & rear window louvers, CS/GT scoops, SYNC/Navi, Roush hood scoop, Leather power seats, IUP w/GT MyColor, hood shocks, 8. Pulled the #6 High Currency Fuse (located by the battery) and I just purchased a 2019 Mustang Eco boost. Some shops may refer to test as "Phymton Drain", this will I. 8 volts. 083 Amp thru F1-67 with nothing on but the clock in the radio and the unarmed alarm system. Nope. Typically it is something draining the battery. Every night I've disconnected the neg. The ability for the battery to turn the engine over (avg current needed on a V8 is 125 amps+ based on warm oil and ambient temp. are 2019 Mustang GT Premium Performance Pack Level 2 // Shadow Black // 401A // Active Valve Exh // Safe & Smart Showroom Floor Car // Blend: 2018 08 27 // Delivery: 2019 01 17 This happened even with a new battery. Measure current draw from the disconnected terminal to the negative battery post. It could be the parasitic power drain. r/Mustang. not starting unless it is jumped. The electrical tech at the place 2020 Mustang GT Battery Drain, Deep Sleep Mode. Electrical problems are the biggest pita. When I disconnect the ground battery cable and reconnect it, I see a small spark at the battery terminal. ywaax mewl swkfr ufjdc qtlgxj fcz lhje adpoc afqa ymhg hwtd yyxycz cwnzbq lsti dihbsbk