Intermittent malfunction of E46 windscreen wipers

[carBlacken]

I own a 2000 E46 325i. While driving last year, my windscreen wipers unexpectedly stopped functioning. Luckily, it was just drizzling, so I was able to get it home. When I drove the vehicle again, the wipers functioned well and continued to do so for around 10 months. It occurred again and has evolved into a wholly arbitrary image. They may function properly without any issues, but then they start to malfunction. I parked the vehicle, checked the wipers a few times, they worked well. However, when I tried to use them again later, they didn't operate for weeks. Replaced the motor with a second-hand BMW component that has been tested. Despite the mechanic's statement that the car's features were not functioning, they were operational as I drove away. I have changed the wiper stalk. The relay was inspected and cleaned, but it only functioned briefly before failing while driving in the rain. It resumed working a few minutes later. The vehicle was sent to a mechanic where it has remained for a week. The wipers have been tested daily and are functioning properly each time. The washer spray consistently functions well.

I have a tight budget and cannot afford to spend money replacing components without solving the problem.

Can someone kindly assist me? I am feeling quite frustrated.

Is it feasible to install an additional switch on the dashboard to ensure the wipers are functional in my car?

[Trevorseaf]

How was the wiper relay tested?

[br1anuk]

I need to repair the brown wiper relay located within the electronics/ECU box in the engine bay. They wear a bridge that confuses the control module, causing them to cease operating until you restart the vehicle.

[Rashman4u]

I had same issue with my e90 last year. The issue was caused by the relay. It was quite unpredictable. Finally acquired a relay tester. It would function well, then abruptly stop and take a long time to resume working (referring to the relay, not the tester).

[carBlacken]

Did you install a new relay? Has it resolved the issue?

[carBlacken]

I'm pleased that you resolved your issue. Thank you, it's a cost-effective solution, however my technician has informed me that a new relay would cost about £70. May I know the brand of the relay you purchased?

[Rashman4u]

Authentic BMW from eBay

My automobile is a 2009 e90 320D.

Locate the relay on your vehicle, remove it to determine the part number (P/N), visit realoem to obtain the P/N, then search for the part on eBay or consider finding a cheaper one at a salvage yard.

https://www.ebay.co.uk/itm/202313083967?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338774556&toolid=10001&customid=130832X1595858X9844666e9478ff2a9e80a2c6cd21c513

 

[carBlacken]

Excellent! Thank you for your assistance.

[Rashman4u]

Not a problem - I really hope that resolves the issue. Locating an inexpensive OEM relay may not be a significant financial risk, even if it proves to be incompatible.