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thanks, tried the fluid changed but does not work. will try to disconnect the connector to the rear differential to verify its the rear differential pinion gear issue before changing the rear differential.
I have a problem with my CLA 250 model 2014, 4Matic, and I have described the problem I have faced in my previous posts regarding the rear differential noise.
Actually, after disconnecting the Solenoid rear differential I was sure the problem is from that part.
My Mercedes( independent Engineer) recommend an additive to the rear differential in order to eliminate the noise as per some customers who have tried this additive and it works very well.
I just applied the additive and waiting to run the car about 100km trip to find out if the issue will be solved or any other problems will occur :) :)
I'll keep you posted and wish me a good luck 🤞
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