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Reset computer after battery failure - 2008 Chevrolet Tahoe

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It will reset and re-learn when you start the car back up.

Posted on Nov 14, 2010

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Just replace battery and error code comes up, and is not marking speed


If prior to the battery replacement the car was acting normally it is most likely during the power interruption a failure code was generated. This caused the PCM (Power Control Module) to enter a state of (Safe Mode). or also identified as a limp home mode.

To correct this it will require you to either connect a scanner and reset the codes, or remove that battery terminal and wait several minutes for the computers to reset.

Hope this helps?

Oct 09, 2016 | Cars & Trucks

1 Answer

What is Psm failure on porsche


after replacing the car battery you have to reset the computer in the porsche. what happens is after battery is dead it shuts off the computers, and thats why you get that message

Jan 31, 2015 | Porsche Cars & Trucks

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Charge battery and now it says engine failure loss of power on my e65 750


2 things your
battery isn't fully charged meeting you need a new battery or the computer has to be reset.

Jan 30, 2015 | Cars & Trucks

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Mil/check engine light due to obd communication failure


Disconnect your battery. Touch the two battery cables together. (make sure they are not in contact while hooked to the battery). Then leave the battery disconnected for 10mins. Connect battery again. This should reset the computer. Sometimes lights my be on until you drive the vehicle a short distance, then it resets.

Oct 03, 2013 | 1997 Dodge Caravan

1 Answer

Is there a reset button to reset ur check engine when it come on so that I can reset it myself


No. Your vehicle is not equipped with any "reset" button to reset the check engine light.

If you want the check engine light to turn off, the proper method is to scan your onboard computer network to check for stored fault codes. Then you perform the diagnostic tests that are indicated by the fault codes. In doing this, you then pinpoint the actual cause of the failure. Once the cause of the failure is determined, the appropriate corrective action must be performed to fix the fault (replace part, repair electrical circuit, reprogram computer, etc.). Only then, should any "reset" be performed. This requires the use of a scan tool that can interface with the onboard computer network and perform all of the functions required to complete the system tests and determine the cause of the fault and also to verify that the fault has been corrected.

Failure to do it this way will only result in repeated system failures (with the light coming right back on), poor fuel economy, and possible severe engine/emission system damage, which will cost a LOT more money to fix. (Which is WHY the manufacturer did not provide you with any "reset" button.)

Mar 18, 2012 | 2010 Kia Optima

1 Answer

Have an 02 mustang, changed plugs and wires and put on a new ignition coil. check engine light is still on.


Try disconnecting the negative battery cable from the battery for about ten minutes. This should reset the computer to the limp mode, which is a hardwired program to keep the car running if there is a computer failure. After ten minutes restart the vehicle and all codes should have reset. The vehicle will not run at its best so drive it around for a while and let the computer relearn you driving style. If the light is still on, you will need to go to a dealer, or most auto stores will hook up a diagnostic free, and erase trouble codes. Remember that it will take the computer a while to relearn.

Dec 30, 2011 | 2002 Ford Mustang

1 Answer

Reset the onboard computer


They mean to turn the ignition key from lock to run (don't turn it all the way to start) and back to off a few times. It's like restarting your computer after installing updates. Or you can unhook the negative battery cable for a couple of minutes to clear the codes from the computers memory.

Sep 13, 2009 | 2000 Daewoo Leganza

1 Answer

Reset position light failure message


Disconnect the battery for a minute and reconnect.

Aug 12, 2009 | Volvo S60 Cars & Trucks

1 Answer

2003 saab 9 3 2.0 t


the 03 9-3 is rife with computer glitches, my solution for most of these is to disconnect the battery overnite to reset the computer

Jul 24, 2008 | 2003 Saab 9-3

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