BMW
528i
6

Water Pump May Develop Coolant Leak on BMW 528i

Problem Description and Possible Solution

The low coolant light may illuminate and/or the engine may overheat as a result of a coolant leak from the water pump. The leaking pump will require replacement and the entire cooling system should be inspected for leaks as it is not uncommon to find multiple leaks on higher mileage vehicles.

Overheating can cause severe engine damage. If the engine begins to overheat it is recommended to stop at the first available location and have your vehicle towed to a repair shop.

Problem Data
RepairPal Verified
Average mileage: 163,785 (147,776–176,580)
2 model years affected: 1999, 2000
6 people reported this problem
Comments
Viewing 1 - 3 of 3 comments
i have multiple leaks in my car of which include: coolant leak, power steering leak, and an oil leak.
Coolant was topped off (down about 1/4" on the floater) in Memorial Day weekend as part of a service. Labor Day weekend driving home and at a traffic light smelled a "dry, hot" smell. Did quick glance at gauges and watched needle jump to redline, no warning, no steam, noises, etc., just a smell of "hot." Immediately pulled over, let engine cool. Started it up and needle was down in safe terriorty, but popped up as soon as it was stopped at a red light. Combo turn off engine at lights and alternatively revved it up enough for fan to keep it cool (fan was not the issue; belt not the issue, etc.). Got it home (1.75 miles away; LOTS of traffic lights). Popped open next morning and found about a thimble full of coolant at bottom. Refilled. Checked again in an hour and it was down almost an inch. Filled up again; did check this morning (6 days later; it's sitting in garage), and it's drained down to the bottom again. Had to make an emergency drive (4-mile round trip); filled up the reservoir and kept eagle eye on it; engline light was off at initial fill; popped on again about a mile into the drive. Will check to see how empty it is again and then refill (to see of this causes the engine light to go off). Fan is fine; a piece of cardboard under the area where the reservoir is has definite evidence of leak, but doesn't seem to have enough fluid to make it the singular source? Ther is no evidence of coolant spraying around inside the engine compartment when running.
Water pump leak - had to replace all hoses and the water pump - age of the car and miles driven were the main reason it gave out.