i know that im supposed to unhook my battery and open the doors for 10-15 minutes, but i dont know the correct steps and order to doing it
2007-03-16 15:14:04 · 8 answers · asked by b3nsonx 2 in Cars & Transportation ➔ Maintenance & Repairs
For what reason do you think that you need to reset the ECU? What is the year, make and model of the vehicle? Are you trying to get rid of a check engine light? Unless it is an OBD I vehicle, and you have had it evaluated by a professional as being a fluke code, "resetting" the ECU is unlikely to do anything except make the vehicle run worse. If the problem is still present, the light will return. It will not correct anything. Disconnecting the battery and waiting long enough to discharge the capacitors that supply power to the keep alive memory of the modules will only erase any adaptive strategies. For instance, over time your car "learns" fuel trim ratios based on feedback from the sensors that is used to give you optimal emissions and fuel economy as well as performance. Erasing this information from the ECU will only cause it to have to learn it again. As I have already stated, it absolutely WILL NOT correct a problem with the vehicle. Also, if your vehicle is older than 1996, then disconnecting the battery for only several minutes will clear it, but if it is an OBD II vehicle made around 1996 and later, then it can take hours to discharge the keep alive memory.
2007-03-16 15:26:59 · answer #1 · answered by Mtech 3 · 0⤊ 0⤋
Don't know about opening the doors but I do know the american manufacturers will tell you to disconnect the negative cable for at least 5 minutes but the longer the better as I've seen some car PCM's retain the learned info for longer than 5 minutes already....
I'd say call it an hour and do from there... all modules are already shut down (except their memory storage) after about 30 minutes anyway...
2007-03-16 15:19:46 · answer #2 · answered by gearbox 7 · 0⤊ 0⤋
Simply disconnect the battery for 15 minutes and then reconnect it. The doors have nothing to do with it.
2007-03-16 15:20:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
All you need to do is disconnect the battery. You won't even have to wait 10 -15 minutes.
2007-03-16 15:18:55 · answer #4 · answered by David A 3 · 0⤊ 0⤋
ive always known that you just disconnect the battery for like 10 minutes or so. But that might differ from car to car. Works on my Honda.
2007-03-16 15:19:31 · answer #5 · answered by piecies_81 3 · 0⤊ 0⤋
Disconnecting the battery ground for 10 minutes should suffice.....
Ince you start it back up, your idle should surge for a bit....until the sensors kick in and start giving the ECU feedback.
Once the engine relaxes and idles smoothly, you'll know you reset the ECU.
2007-03-16 15:19:40 · answer #6 · answered by tito_swave 4 · 0⤊ 1⤋
considing you have corrected your problem,on gm cars,unhook the negative battery cable for a short period of time and then re-connect the terminal.this is a first for me about opening the door thing.after repeative key starts,this helps re-set things too
2007-03-16 15:31:08 · answer #7 · answered by Don O 2 · 0⤊ 0⤋
make sure you open the the hood after u disconnect the battery and then the take off the gas cap off before u open the trunk then open the doors after u vacum
2007-03-16 15:21:48 · answer #8 · answered by Anonymous · 0⤊ 1⤋