If your BMW overheats when driving or idling, and the coolant temp light is red, chances are good that the water pump has failed.The newer BMW’s are known for water pump failures.
If you have scan the trouble codes and get a BMW trouble code 337A – deactivation of water pump due to blockage, don’t think you’re off the hook for a
new water pump. It isn’t really a blockage. It’s an indication that the pump impeller has come loose from the pump shaft.
Fix BMW overheating problem
To correct a BMW overheating problem you’ll need a new BMW water pump. The water pump for the 135i with a 3.0L engine is #11517586925. Shops are reporting bad luck with aftermarket pumps, so stick with genuine BMW. Yes, the new water pump is pricey at $546.40, but you bought that problem when you decided to buy a BMW. The labor guide shows that it’s a 3.0 hr job, so labor will run about $450 (at $150/hr).
©, 2015 Rick Muscoplat
Posted on by Rick Muscoplat