Hi Folks,
I have found myself twice in this situation having to search for this very useful thread when ran into the same problems that folks
Symptoms: Passenger Power Window not working, Passenger folding mirror not folding, boot not getting unlocked when the car is unlocked
Timing: It happened last year Jan'2020 when the car was parked in airport parking for few weeks, and it just happened again when the car is hardly driven and extreme temperatures again. So it seems to be happening when its cold.
What worked last time: Having read the forum last time (thanks for all the useful replies), I removed the housing under the passenger power switch and gave it a good clean. I used the 'electrical contact cleaner' from Halfords which evaporates, and then let it dry and reconnected everything. And magically, everything started to work. So I felt that the boot, folding power mirror and passenger power window are connected as some people described in this thread. I had ***umed that it needed the power supply unit to be replaced so before I resorted to scrapyards, I did this as a desperate attempt and when it worked I wasn't sure if this is still the power unit on its last legs which 'happened to work somehow' of if it is still the weather getting the electric bits under the weather
Current Situation: As you may have guessed from the wall of text above that the same procedure didn't work this time
I dried the connectors, used the electrical connectors cleaner again but nothing worked. Additionally, I read up about fuses. There are internal fuses and external fuses. The ones external in the engine compartment didn't seem to have any related fuses. The internal ones, under the passenger side glove box on the left wall, had a no.13 (20A) fusion which seemed to relate to the passenger power window. I replaced it with a working 20A fuse (figured out the working one by taking out the fuse for the rear window that stopped working when taken out) but this didn't work either. And doing all this in -3 degrees temperature wasn't fun!
Thoughts
- Given how it got fixed last time, should I leave it like this and wait for the weather to get better and hope for the dryness to help?
- Is there a way to actually test what part is not working? (like checking the current somehow in the bunch of wires that connect via the connector to the power switch?)
Can anybody on here please shed some further light on this? I would be truly grateful.
Thanks