Wiper intermittently quit working and then went out completely; This is what I have done so far and non of these have fixed the problem:
1. replaced the wiper switch in the steering column;
2. checked all the fuses, they were all good;
3. replaced 2 relay units; (this is all under the advice of BMW mechanic)
4. replaced the motor, checked voltage to the motor—have no 12V going to the motor, but have 5V power leg to maintain zero position on the motor drive;
5. replaced the main module that controls: the wipers, power seats, power windows, steering column, heated seats, ect.
6. pulled passenger side seat, checked 2 main fuses and they were OK.
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Oct 29, 2012 - Uploaded by Jude Augusta
RAM 1500 Intermittent Wiper Screwed Up / broken. ... Update: AFTERMARKET PART (NOT the original) works PERFECTLY: (603) 758-1046 is the CITGO in Hampton, NH ... I lived with it in my 04 Ram but now there is no intermittent - its on or off. ...Replaced the wiper motor - it has the "intelligence" in it.
The power distribution panel on your car is located under the hood in the engine compartment. It is located on the right passenger side closest to the firewall.
When you open the cover to the PDP, you'll see a series of blade type fuses in the front compartment and a bunch of wire harnesses in the back- that's where you'll find the tan colored relay you need to replace.
I have attached a youtube video for you to watch because it appears that the most common cause of this relay failure is due to water build up in the PDP compartment which is causing serious wiring deterioration and rusting- not only to the wiper relay but to the other relay components in that block.
So should you be experiencing the same problem when you open the power distribution panel, you'll know what to do.
First pull and inspect fuses. If good I suspect the wiper switch is bad or ground is loose. Ground wires are identified as brown wires in bindles bolted to firewall, fenderwell, etc.. make sure they're not corroded. Bimmers are pretty tough and I really suspect a fuse.