PDA

View Full Version : Volvo S80 synchronization problem !!



rabee7878
8th March, 2015, 08:37 PM
Hello ...

-----------------------------------------------
Car ... Volvo S80
Year .. 1999
ECU .. Bosch 0261204559 .. 01275781B ... H3.2
CEM .. HW-PN 9452596
------------------------------------------------

The car doesn’t start and loose all keys and synchronization with motor ECU after battery discharge, in motor ECU fault code shown ( No communication with immobilize ).
I try to repair CEM by reading flash intel 28F400 memory and fix it, i make 2 Transponder keys by Tango , also i read internal EEPROM memory motor ECU ST95P08, i make new synchronization between (ECU <==> CEM ) success .. i install (ECU.. CEM) back to the car.

Now when i try to start the car, the engine crank and runing for few seconds and goes off ... when i check the synchronization code at ECU i get wrong code like this (FFFFFFFFFFFFFFFFFF00) ... i do correct again the wrong synchronization code and write to eeprom back ... when i start engine, it ruining for few second then goes off again ... now i change the other ECU and ECM also i got same result ( wrong synchronization ) (FFFFFFFFFFFFFFFFFF00)

correct synchronization code 57971286433914900400
wrong synchronization code FFFFFFFFFFFFFFFFFF00

any idea to hlepe me to solve this puzzle :stung: , maybe someone can make it immo off for me >>> :biggrin:

soxten
8th March, 2015, 10:52 PM
Change cem, it looks like your "used" cem is bad.



Christian Johansson via Iphone 5s

rabee7878
26th March, 2015, 03:28 PM
I replaced by other CEM the same result :( ... i need immo off please