I want to disconnect the battery, clean the terminals and ground etc and reconnect. I don't have the factory radio so no code needed. Is there any other settings that will be lost? Do I need to recode the remotes?
View 4 RepliesSo I bought this 1997 Saturn SW2 that had its engine replaced. I think they wired it wrong when they did it. They only way to start it is to disconnect the battery then reconnect it. If you don't and just shut it off with the key and wait a minute, when you turn the key to the on position, the instrument panel will not come back on without disconnecting the battery. However, if you start the car and then shut it off, then turn the key right back on (less than a minute) you can start the car without disconnecting the battery. It's like something needs to be reset once you shut the car off and leave it off for a while.
View 3 RepliesI have a mk4 golf gti vr6. For about the past month every few days when I shut off my car and then try to start it next time I get a very fast clicks. After I disconnect and reconnect the battery it starts up just fine. Yesterday after getting off the highway it shutoff when I came to a stop. Took the key out and before I disconnected the battery it started back up with a turn of the key. I'm guessing it's some kind of ECU issue because it starts up after I reconnect the battery?
View 9 RepliesI have a 1987 LeSabre that will not start sometimes and if I disconnect the battery and let it sit about five minutes and reconnect, it starts right back up. Then it seems to be fine for a few days, then won't start again. When it is trying not to start, it cranks, but when you let go of the key it dies again Unless the gas is continuously pushed down.
If you keep trying to start it without adding any gas, it seems like it cranks less and less each attempt? There don't seem to be any other problems with this car at all and no real warning that this is going to happen. I can't even think of things that have been the same each time it happened. It has happened when car was warm, happened when cold. I guess it has happened after letting the car get below 1/4 tank and then refilling (sometime within a day of a fresh tank it does this, maybe?)
I have a 2003 Jeep Grand Cherokee and randomly it decides not to start unless I disconnect then reconnect the battery. At first when I try to start it every accessory will be off but the A/C recirculation light is on for some reason. When I turn the key all the gauges move sporadically but the engine will not turn over at all, which you can see in the attached video. I disconnect and reconnect the battery and everything works perfectly fine. The only other issue has been that sometimes when I unlock the car (I no longer have keyless entry) the alarm will go off until I start the engine. I have not had both problems at the same time.
View 10 RepliesI recently purchase an 07 prius and now the AC only works If I disconnect the small battery at the back and reconnect. It worked fine when I first got It, but after dealing with no AC I decided to try disconnecting the battery and It works. The problem Is when I stop at a light a red triangle shows up on the dash board and If I turn off the car I would have to disconnect and reconnect the battery In order for It to work.
View 3 RepliesI have a jetta that sat inside for 3 months. and when i went to start it it ran great but when i went to restart after shutting it off it wouldn't restart until I disconnected the battery for a few min and reconnected it , and that is when the check eng light came on the car runs great but having to disconnect the battery each time so I also took it to get the codes read and this is what i got po725, p1780, p1850, po605, po113, po102. I find these codes to be well to say it is a little unbelievable as the car runs fine and i had no trouble before i parked it for 3months. The car only has 58,000 miles on it ?
View 4 RepliesI have an android phone (Motorola Atrix 4G), and it bluetooth syncs fine with my Prius C One, however when I am driving on the freeway, it will occasionally disconnect for several minutes, then reconnect. It's annoying because I use my phone as my personal Ipod and I can't stand listening to the radio, and without fail, every-time I drive in heavy traffic, it will disconnect and I'll have silence for a few minutes till it reconnects. I can't upgrade my phone till February and I plan to get an Iphone, but for the time being I guess I'll have to use an Auxiliary cable instead of bluetooth.
View 5 RepliesA few weeks ago, my door unlocking settings reset to "driver's side" (I have it set to "all") 3-4 times in one week. I remember this being an issue with the 2004 models, but I was surprised to see it happen in my 2006... and then completely disappear.
View 13 RepliesHow I'd disconnect the battery power? I don't have the owner's manual handy. I'm attempting to reset all systems to clear a 'steering defect workshop' warning. I've removed the cover and think I see the battery (there's a black bar over it that I can't remove by hand).
View 1 RepliesJust picked the Explorer up from the shop getting a new radiator. This question has nothing to do with the radiator, but the fact that the mechanic was not gentle on the drivers door like I've learned to be. Now, the door wont latch. It will close and lock, but still reads DOOR AJAR. The thing is, there is no way to keep the interior light from staying on...except to disconnect the battery. Until I can get this fixed, can I remove the bulbs from my interior lights, or will the battery still run power to them even without a bulb? Trying not to disconnect the battery everytime I park.
View 10 RepliesDisconnected my battery for about 15 minutes to wire up HIDs. Couldn't put them in due to the nut not coming off the battery bolt. tightened battery and started car. dash has amber steering light on and traction light. when i put it in reverse (AT) it banged into gear, then put in "manual mode" trans jumped and banged into 3rd gear. also noticed 1 touch windows not working. What might have gone wrong from a simple battery disconnect. no additional wires were hooked up to the car or did i forget to reset something.
View 4 Replies My 2007 lexus es 350 engine will not shut off after I push the off button.
The everything goes off except the engine and the dash lights. I have to disconnect the battery to shut off the engine. The car does not have a remote start. could it be a relay and if so which one.
Last night I left the car battery disconnected and then this morning reattached and everything seemed fine. I started the car and let it fun for a couple minutes and then pushed the button and the car shut off. Then about 2o minutes later the alarm went off. The remote would not respond so I started the car and the alarm went off. Then I pushed the button to turn it off and the same problem occurred.
My '99 F150 suddenly lost all interior heater/ac fan control settings except for Hi. Is it the switch or something else in the circuit?
View 8 RepliesI got the plugs for my '06. I hope to put them in in a day or 2. My question is: is it necessary to disconnect the 12v battery to do this? I've changed plugs in other cars without doing so.
View 6 RepliesI narrowed my battery drain to the box on top of the battery. When I disconnect all three fuses and the 4th wire from inside the box my draw goes to 0 but when I connect any of those 4 it will go back up. Connecting all of them will not increase the draw any more but it seems all of them are connected in some way?
View 3 RepliesHave 155,000 miles on my 2000 Echo, just replaced O2 sensors (probably needlessly, I see now) before I found a loose hose at air filter area, which when I connected it, caused the CE light to finally go out (P0171 code originally)...already cleaned old, then ordered a new, MAF before I found the loose hose, so think I'll go ahead and install the new MAF anyway...do I need to disconnect the battery to install it? Afraid the darned CE light will come back on, but guess I can again drive it awhile and hope it will go out when the computer stuff resets itself.
View 1 RepliesI have been suffering from LH battery drain for some time now. sometimes its random I will park it for 10 min. come back and the battery is drained (I have to use the key to gain entry). sometimes it only happens over night, where other times the battery doesn't go dead overnight. so last weekend I decided to change the brakes...That was easy but then I forgot to hook up my battery maintainer...so you know what happened! now the problem is I charged the battery and hooked it back up. No start! everything works fine the battery is fully charged and only 1 year old.
But this is the weird part if I disconnect the starter battery the car starts up fine. I hook both batteries back up and try the parallel start way (turn to start then full counter clockwise then full clockwise several times no luck). the LH battery is drained now after a few start and stops (no driving) and the starter battery is fully charged. but with both batteries hooked up it wont even attempt to start and now I also have no power to the power trunk!!! this car is starting to suck balls.
Have lost all fan speed control in both hot/A/C settings. Resistor pack checks out okay. Fan runs when voltage applied direct to it. Have +12v into r-pack. Fuse (inside) okay. The fan speed is controlled by adding resistance between Fan & ground. Thermal cutout part on R-pack okay. How do I test out the relay (in engine compartment), and could that even be the prob? Will look at dash switch next. Any schematic for this?
View 2 RepliesI replaced a post-cat O2 sensor because of a code that came up last week. We didn't reset the ECU, but after driving it a couple days the check engine light went out. 3-4 days of driving and everything looked good.
Today the check engine light came on again and autozone read the code as:
P0136 - heated oxygen sensor - bank 1 sensor 2 (HO2S12) sensor range/performance condition
Explanation Open circuit or short circuit condition
Probable Cause
Poor electrical connection
check other service codes
Faulty Bank 1 Sensor 2.
Anyway, I thought it might be because we didn't reset ECU and some kind of calibration might be off in the system. So, I unplugged the battery in an attempt to let it discharge and reset ECU. When I connected the battery back up.... ALL THE FREAKIN LIGHTS ARE NOW ON THE DASH. Check engine... traction control.... tire pressure.... everything.
Golf TDI 2012
I know there are battery "thingies" that plug into the lighter, which supposedly preserve the settings, but since the lighter is not "hot" when the car is not running, I don't see this working. How to do?
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