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I have a 2010 E550 4Matic and was having a problem with the fan. After checking some postings, I checked the front SAM to check relays and noticed that the slot for Q relay is empty. Is it normal? The only time I can think of when someone else worked on the car is when I took my car to a shop for the transmission oil and the starter replacement, and the mechanic might have forgotten to put it back. That was almost a year ago. I am wondering if it is normal to have the slot empty or should I put the relay there since a couple of weeks ago my car went to "P" when the speed was around 25KM/hour (it was also bit hot that day). However, since then the car is running as expected.
Any responses would be greatly appreciated. Thanks.
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W212 2010 E550 Q Relay Front SAM
