C4 Picasso software update at home

citroenxm · Post by **citroenxm** » 07 May 2016, 08:59

Hi all

I was wondering.. How do you go about a ecu soaftware update on a c4 picasso egs ecu.. Is it easy or tricky? Where do i get the update from?

Thanks

Post by **GiveMeABreak** » 07 May 2016, 10:01

You cant with your own lexia,without a dealer account login. Citroen will do this as part of a service if you ask them, or separately for a charge.

citroenxm · Post by **citroenxm** » 07 May 2016, 11:48

Cant you? Oh.. I had read over on c4 picasso owners that you can..

Prehaps i should ask in there then..

Post by **GiveMeABreak** » 07 May 2016, 11:52

citroenxm wrote:Cant you? Oh.. I had read over on c4 picasso owners that you can.. Prehaps i should ask in there then..

On Diagbox, if you try and do an ECU download it asks for a login - fail this and it will deactivate your Diagbox. I've had this happen three times lately - so good luck

Here's a similar link on C4 Owners:
http://c4owners.org/plugins/forum/forum ... 04945.post

citroenxm · Post by **citroenxm** » 07 May 2016, 16:59

Ok marc fair enough... You can do a self cibrate though i read by flooring it hard...

Post by **GiveMeABreak** » 07 May 2016, 17:05

Yes - no problems with that as in a way it is a sort of 'learning' routine or an initialisation procedure that can be applied - without changing the software itself. Very much like how your car will adapt the fuel mixture according to conditions or the suspension will analyse road conditions etc. It's the actual software download to the EEPROM that needs authorisation from the PSA servers.

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C4 Picasso software update at home

C4 Picasso software update at home

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