Computer reset

This video will help

https://youtu.be/ahK_eucFi-k


1) Disconnect the battery's negative terminal under the hood for ten minutes, then reconnect.

2) Using the key, turn the ignition switch to the position that is just before the cranking position but do not start the engine and leave it on for twenty seconds, then turn it to off for thirty seconds.

3) Again, repeat step 2, turn the ignition switch to on (but do not start it) for twenty seconds then turn it off and wait thirty seconds.

4) Start the car but do not touch the gas pedal. The car should idle at this point.

5) Let the car idle for ten minutes then shut the car off for one minute.

6) Start the car again and let idle for five minutes then shut the car off for two minutes.

The car should be ready to start and drive.

I am willing to try this on one of my vehicles out of curiosity, but I was a Chrysler mechanic for ten years, and never heard of this procedure. This sounds like a variation of relearning GM's anti-theft system. Disconnecting the battery cable will erase diagnostic fault codes and fuel trim numbers, but those codes will self-erase after fifty engine starts if the problems are gone. Fuel trim numbers are constantly updating on their own without us ever noticing, so there is no reason to want to erase those.

The only thing you need to do for Chryslers after the battery was disconnected or run dead is drive the car. Specifically, idle speed will be too low until "minimum throttle" is relearned. Until that is relearned, you will not get the nice idle flare-up to 1,500 rpm at start-up, the engine may not start unless the accelerator pedal is held down 1/4", and it will tend to stall at stop signs.

To meet the conditions to initiate minimum throttle relearn is to drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals. Time and high intake manifold vacuum are the things the engine computer watches to know when it must be in control of idle speed.

I have a service engine soon light and a abs light on that will not go out-had my mechanic check things out and he could not find anything wrong with vehicle-how do I get these lights to go out so I can sell the vehicle?

Hi:
You can do two things. First, disconnect the battery for aprox 15 minutes. That may do it. If not, go to a local nationally recognized parts store and have them scan the system for codes. After they tell you what they find, ask them to reset the light. Keep in mind, most of these places will do this for free.

Joe