Rebooting The Ecu ?

[carday]

Somebody told me yesterday that you can reset the computer software on a Toyota Avensis d4d by taking the terminals off the Battery and after a few minutes shorting the leads out by using a spanner to join the positive and negative together,

I find this rather strange and probably would do some damage to the car due to any static in the electrical system.

Any body any ideas.

[ormi]

explain mate???you mean shorting the Battery out with the leads on the Battery or touching the terminals together off the Battery???

[carday]

explain mate???you mean shorting the battery out with the leads on the battery or touching the terminals together off the battery???

Yep sorry OFF the Battery

[ormi]

tell who ever told you that !Removed! that thats the best one a toyota tec has ever heard . also tell them it wont do a thing apart from loose your clock and radio stations!

[carday]

tell who ever told you that !Removed! that thats the best one a toyota tec has ever heard . also tell them it wont do a thing apart from loose your clock and radio stations!

Yep thought so, He told me that an AA man had told him, thought it was a load of tosh but thought I'd run it on here see what response would be

[Aamir2892]

Yes. When you take the Battery terminals off for 10-15 Min's it does reset the ECU as it loses all the power but no information on the ECU will be erased because its on a flash chip like a BIOS chip on a computer. Their is no need to short the two terminals and i would never stick the + and - wires together. After you reset it, let the engine idle for about 1 Min before driving off so that the ECU can set it self again. You will lose all radio stations and the clock will reset as might the AUTO windows.

[OldSkoO1]

Don't really need to d/c the Battery.

Just open up the fuse box in the bonnet. Normally on the right, square plastic box

Locate the fuse pulling tool, this is a white whisbone looking thing.

Remove fuse ECU-B, from memory i think it is the 3rd one down from top left column.

Go and pump the brake to dissipate the charge, maybe wait 5 mins. Put fuse back in and it will be reset and you dont loose memory settings for radio / windows.