[fcc31]

Hello everyone,

I have a bmw x5 3.0d E53 of the year 2006. The car starts sometimes. When I make contact and the temperature needle goes to the maximum, it does not start, also the DDE warning light comes on. When I make contact and the temperature needle stays in place, it starts, and it goes perfect.

I have exchanged the two blue relays, and it continues to fail. I do not think the two are in bad shape.



When the temperature needle is at its maximum, I try to connect the diagnostic machine and give "communication error", when it works fine if it leaves me.

I only have error codes in the Instruments box
F6
F8
F4
F9
CAN Identification missing.

Anyone know what can it be? I read through a forum that was a switchboard problem.
Sorry for my english i use translator

In this photo the car would turn on



In this photo the car would not turn on



I read ECU with MPPS, i attached the 2 maps i can read.

[pinotec]

Problem is file ecu corrupted , read with bdm and search bkp with equal sw, after resync isn with diagnosis

if have problem contact me

[DJAMY]

Bring other ecu even used if temp stay in left and can diag any times your problem propably must be in your orig ecu ( hardwear ) look for the IC in board botom right if some pins are disoldiered or
some times if CAN are disturbed by other module it happened this problem