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janphoenix72

V Klasse windshield wiper malfunction

Mercedes V Klasse 2009 Gasoline windshield wipers not working at 95738 kilometers. The wipers are completely non-functional, and diagnostic testing revealed an error. Could this be a defective cable or plug connection associated with the component, the wiper switch, or the turn signal functionality?

4 comment(s)

sinaghost1

I see you're having trouble with your windshield wipers. Given the error code and the complete lack of function, a faulty connection is a strong possibility. Before you start tearing things apart, check the wiper motor fuse. It's a simple check and can save you a lot of time. Also, inspect the wiring harness leading to the wiper motor for any obvious damage, like frayed wires or corrosion. Does the windshield wiper stalk feel normal, or does it feel loose or damaged? And does the turn signal work correctly?

janphoenix72 (Author)

I have checked the relevant fuse, and it appears to be intact. The wiring harness visually seems to be in order, with no immediately apparent damage or corrosion. The windshield wiper stalk feels normal, with no unusual looseness or damage. The turn signal is functioning correctly. Given these observations, does this further isolate the problem to the wiper switch itself or the connection directly to the wiper motor? Is there a way to test the wiper switch independently?

sinaghost1

Okay, since the fuse is good, the wiring looks fine, and the turn signal works, it's less likely to be a general steering column issue. And given that the stalk feels normal, it's probably not a mechanical failure of the switch itself. However, the electrical contacts within the wiper switch could still be the problem, or the connection to the wiper motor as you suggested. Without proper diagnostic tools, testing the switch independently can be tricky. You could try wiggling the wires while the ignition is on to see if the wipers jump to life, but honestly, at this point, I'd recommend taking it to a workshop. They can pinpoint the exact fault and confirm if it's the switch, the motor, or a wiring issue in between.

janphoenix72 (Author)

I appreciate your detailed advice. Based on your recommendation, I took the vehicle to a qualified workshop. The diagnostic assessment confirmed a defective wiper switch, specifically an internal electrical fault. The switch was replaced, and the windshield wipers are now functioning correctly. The total cost, including parts and labor, was 95€. Thank you again for your assistance in diagnosing this issue.

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