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BMW
740iL
37

Multiple Parts May be Recommended to Correct Coolant Loss on BMW 740iL

Problem Description and Possible Solution

Leaks are known to develop in the cooling system. It is common to see more than one part recommended for repair/replacement due to overlapping labor and the use of many plastic parts in the system.

Problem Data
RepairPal Verified
Average mileage: 146,596 (11,300–361,800)
9 model years affected: 1993, 1994, 1995, 1996, more1997, 1998, 1999, 2000, 2001
37 people reported this problem
Comments
Viewing 1 - 18 of 18 comments
The glycol leak is coming from the area where the PLASTIC overflow bottle is fastened with all plastic fasteners (joke) !!!

I need some advise please!!

Thank you
check coolent light kept going on .now coolent has all leaked out on my driveway and check engine light is on/
Smoke started coming out of the tailpipe and the mechanic at Big A Service Center said it was due to an anti-freeze leak in the water pump. The AF goes to the pipes and that causes the white smoke.
unit was woring and suddenly shut off, button for ac doesnt light up and recirculating air also ceased to function
Not fixed. "Air Breather" on top right of radiator leaks. The following failures have occurred since purchased new in 1999. Water pump. Alternator. Drive shaft U-joint. (not replaceable).
Windshield motor. Rear springs. Two window drive systems. Leaky valve gaskets. GPS system failed.