Multiple Parts May be Recommended to Correct Coolant Loss on BMW 540i

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.

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Average mileage: 118,545 (65,000–185,000)
9 model years affected: 1994, 1995, 1997, 1998, more1999, 2000, 2001, 2002, 2003
21 people reported this problem
10 people shared problem details
I own a 97 540i and i had a new radiator and hoses put in and new expansion tank installed and after i put the expansion tank in about 1 month or so. I was driving it home and it lost speed! so i pulled it over and had it towed. the results where an blown engine???? How could this happen with out any warning lights or anything the coolant indicator read normal! now my warranty want pay because the said i overheated the car!!! I would never do such a thing to something i love and adore. Please if anyone can give me some advice or how and what happen please let me know.. Thanks...
Radiator, water pump, expansion tank, and thermostat
2002 BMW 540i185,000
I have to add coolant every 3 to 4 months about 500 milliliters, the problem has existed since i got the car 120000 miles ago, I have had multiple attempts at fixing with different mechanics none of which have succeeded
1998 BMW 540i154,000
The check coolant light comes on even after topping off the system, but the level is higher. However after about a week the level will drop and I can see some fluid on the garage floor
Dealer/broker did complete replace of cooling system prior to my purchase. Extensive leaking.
2001 BMW 540i89,000
Piece of garbage radiators. Aftermarket is better. Tired of driving past the BMW dealer only to have the car drive itself in.
1994 BMW 540i153,000
Replaced all cooling hoses. Bigger problem is the hoses passing through the firewall and the minimal clearance between the three clamps. I switched to VW eared clamps with new hoses and no more leaks.
Coolant leaks and potential timing chain issue
2003 BMW 540i75,000
Cracked radiator. Replaced with OEM parts. repair bill was $865.00. If I used an aftermarket replaement I could have saved about $200.00. Not sure I made the decision.
2001 BMW 540i65,000
Had a crack in the radiator. The dealer charged me over $2500 to repair everything. It was insane.
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