Originally Posted by
scottishcrossfire
1) Recently acquired a 2005 Coupe with 45k miles that had been little used in recent years. 2) Looks like it has suffered some water ingress that has interfered with electrics - I have recently replaced the Engine Management Control Relay (We call that an RCM - Relay Control Module) (A 170 545 03 05) which has resolved many of the issues, but a couple still persist.
1) Cars that sit can be a real PITA for a while. Mine had sat 20 months and it took over a year to work thru the issues.
2) This statement is not helpful, you talk of water intrusion and the RCM - did the RCM get wet? If so, HOW? The RCM can't get wet without the BCM and ECU getting wet and it can't get wet if that cover is on the box. Please make clear what you mean by "water intrusion".
With key removed, the driver side external lights are on. With the key in and turned, the right arrow indicator is stuck on in solid display on the dashboard in addition. If I remove the 35 position fuse from the fuse box (is there a better name for this component?) it lets me leave them off so the battery doesn't drain. I am aware the lights **** must be in the fully off position as single sided external lights are a feature on the car. I have tried the switch in every position and it works as intended except for the single sided lights feature.
Fuse 35 feeds the SKREEM, as well as the turn signal relay that drives the pulsing of the of turn signals on FOB signal reception. If that fuse causes ANYTHING other than the turn signals to go out, you have one hell of a problem with the car.
Additionally, the radio is stuck on when the car is on and doesn't display or allow me to turn off. The rear spoiler motor is flashing red on the switch and doesn't work but unsure if this is an issue with the motor or with the fuse box as well. Do I seek to replace the fusebox? I believe it is the set of components outlined in this diagram but I don't know what the ID number for the whole fuse box would be. Thank you!
The radio staying on and not letting you turn it on or off is because the original heads in these cars are dying left and right. DOn't get distracted by this, let's fix the rest of us issues first. The wing switch flashing and the wing not working is certainly a strong clue, but again, did the big box next to the battery get wet inside? If so, you will be needing more than an RCM.
You cant "replace the fuse box" but you can get some parts for whats' inside.
Did water get in the fuse box?