The Need To Reset The Ecu

[bruce e]

Wondering if it is recommended/or an advantage, to reset the ECU when buying a used Auris 1.33?

Just thinking that if the ECU is intelligent & adapts to the driver style & the previous owners driving style is vastly different from your own is there a need to re-educate the ECU by resetting it.

If so, would it reset itself after so many miles driving with the new owner?

If not,how do you reset the ECU?

DIY or dealership job?

[acetip]

Wondering if it is recommended/or an advantage, to reset the ECU when buying a used Auris 1.33?

Just thinking that if the ECU is intelligent & adapts to the driver style & the previous owners driving style is vastly different from your own is there a need to re-educate the ECU by resetting it.

If so, would it reset itself after so many miles driving with the new owner?

If not,how do you reset the ECU?

DIY or dealership job?

a lot of people on here do reset their ecus by just diconnecting their batteries and leave for 10 minutes before reconnecting.

i thought as you have done, does the ecu adapt to a new owners driving style after a certain amount of miles.

as mine runs very well,performance and consumption wise, i have left well alone.

ive also read of avensis owners who have had their ecu upgraded/reset and this may only be on diesels though.

i asked at toyota dealers is the an upgrade reset for my auris 1.6 and was told no.

as ive said i am happy with my cars performance,but oh for a 6 speed box.

[Mooly]

The ECU should constantly be updating and adapting both to driver input and other variables such as fuel quality, atmospheric conditions etc.

Normally a reset is only performed when there is a problem. If you wish to do a reset by disconnecting he Battery remember the electric window "one touch" needs reactivating and all settings will be lost on radio etc.

Usual procedure following a reset is to do a cold start and just let the engine idle until warm before driveng off, then drive over mixed routes, hi speed, urban etc. It can take around 20 miles to fully relearn.

Unless there is a problem I wouldn't bother.

[acetip]

The ECU should constantly be updating and adapting both to driver input and other variables such as fuel quality, atmospheric conditions etc.

Normally a reset is only performed when there is a problem. If you wish to do a reset by disconnecting he battery remember the electric window "one touch" needs reactivating and all settings will be lost on radio etc.

Usual procedure following a reset is to do a cold start and just let the engine idle until warm before driveng off, then drive over mixed routes, hi speed, urban etc. It can take around 20 miles to fully relearn.

Unless there is a problem I wouldn't bother.

thanks for that advice,as i said i will leave well alone.

[Daveyonthemove]

I always reset the ECU if i change cars, and occasionally i reset it after a few months if i feel the car is not responding as it should.

It may have done several thousand miles with the previous owner and learnt that driving style, so adapting to your different driving style could take a lot of miles. If you teach it from scratch it will be set up for you a lot quicker.

[bruce e]

Thanks all for the quick response on this.

I was more curious than anything. As all seems well with the Auris I'll follow the principle of "if it aint broke dont fix it".

Getting 4mpg more than with the 1.4 Corolla

Cheers

[Rick D4D]

To reset the ECU on a T180 here is a copy of my email from my local dealer

John has asked me to Email you regarding removing the correct fuse

This is in the fuse box under the bonnet i think its a 20 or 25amp its called a ECU main fuse

You have to have it out for a minimum of one minute

Hope this is helpful

Regards

Mark

Workshop Controller

[DDT]

Very helpful thanks everyone,

May try this (as well as Tavy's speed sensitive stereo set up)....I have only had my SR180 for 6 days, bought it as an ex-lease so it already has 57k on the clock for an 09 58 plate so might be a good idea for me to reset under these circumstances.

Quick q (as a complete novice) how would I retrieve the window settings?

Tavy mentioned I have to disconnect the Battery to alter stereo wiring so this would automatically entail a reset of the ECU anyway.

I don't think I dare attempt cleaning the EGR valve though....that would be one for Mr T I think - would it be best to get this done before resetting the ECU as it may alter the characteristics of running anyway?

Appreciate all of the good information you have all provided - thanks all.

[tavy]

Quick q (as a complete novice) how would I retrieve the window settings?

If you have completely closed all the windows before removing "-" Battery terminal, there's no need to reset the windows after reconnecting the terminal.

[DDT]

Thanks again Tavy :)