Satnav Reporting I Am In Newhaven When I Am In Hastings

[beautifulstranger]

Hi I am new to this forum, I have a C5 EX SE 2.2 and the positive lead to the battery was disconnected by mistake and the satnav lost it's configuration, I have booked it in to my local main dealer who said they cannot update the ecu's, I feel this is wrong because once they have connected Diagbox it offers internet up date and that is not just to update the Diagbox software, Citroen keep the main ECU files on their server.

 

I am told the ECU's are security coded which is I feel is wrong considering you require your code card to write to the ECU, otherwise Snap-on equipment would not communicate with the ECU

[paul.h]

The Citroen dealer does not sound right about not being able to do updates, maybe there is another Citroen dealer that would give you more confidence in their ability. I believe possibly the ecus and definitely the radio unit are coded to the car so can not be swapped to another car without being recoded.

 

The satnav is built in to the radio unit and is not part of the engine ecu and if you are lucky, it may just need a battery disconnection again to sort it, which you could do.

I have found the following procedure on our C3 and C5 has not given any problems:

- remove the ignition key from the car
- open the bonnet
- wait a few minutes for the BSI to shut down
- disconnect the battery negative terminal

Wait some time before reconnecting the battery.
 

When reconnecting
- ignition key out of the car
- reconnect the battery
- wait a few minutes
- insert the key in the ignition and wait a minute
- turn the key to the first position and wait a minute
- turn the key so the dash lights come on and wait a minute
- start the engine
- take the windows down and up to reset the anti pinch
- reset the clock

[paul.h]

There is a note in the Navi Drive handbook of our 2007 C5 - if your navi drive should malfunction, press for at least 10 seconds on the DARK button to re-initialise the system. The dark button is on the radio unit.