Long time no input.
If you have read this "blog", then you know that my X-trail is haunted with an electrical problem.
Randomly, (when usin cruise, the moust) the Interior lights come on for 2 sec and the BCM goes to failsafe mode. That means the main beams come on, no wipers(but the washer works), No side indicators on the dash(but they work luckly), The autobox loses the torque converter clutch, some times the ESP off and Slip light come on too.
When I stop the car, key off and start the the car again, Everything is ok. Sometimes for 2 minutes, sometimes 1 day, sometimes a week, or even a month.
I changed the clock spring, because the cruise often bring that problem up, and on a very humid day, the radio buttons did not work on the steering wheel. Was like 15€ from Ali. But the problem came still up.
Then ordered an used IPDM(Intelligent Power Distribution Module), that also controlls everything electrical, but that did not help.
Then I thougth that the LED DRL lights could generate an electrical/digital noise. Disabled them and for a while, id was ok.
Next tought was the Pioner aftermarket radio. Sometimes just before when the problem occured and i was listening music from youtube via BT, then YT would go pause and when resuming, the problem was there.
So drove with engine and cabin noises for 3 weeks, but eventually it came up again.
When I plug in the scanner, then the only module, that i can not talk is the BCM. I removed it, opened the case, soaked the PCB with contact cleaner, cleaned the pins and so on.
Bite the bullet and searced for a new bcm. It has to be with the same part number, because the wiring and the connectors may be different.
Found it in Poland from a Qashqai, 50-60€
My delphi DS150 can not program keys, so I ordered a Thinkdiag+ scanner from Ali that uses a Phone app. It is like Launch x491.
It programmed the keys with no problems and had to enable front headlight washers, but the rear wiper stop position is different. Tried to reprogram the BCM like a New BCM and select options manually but the scanner failed. Can live with wiper in 2 oclock, not on 3 like it was.
Touch wood, no problems within 2 days, maybe it is to soon to celebrate but will see how it goes.
If it solved my problems and the wiper arm starts to get annoing, then go tho the dealer and reprogramm it there.
I will play with the Thinkdiag+, maybe I can copy the old BCM settings and write them to the new used one.
I will keep You Updated.