2005 BMW Z4 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2005 BMW Z4

2005 BMW Z4 Problems

Coolant Loss Due to Leak from Expansion Tank

An engine coolant leak may develop from the expansion tank resulting in engine overheating. When a cooling system component fails the entire cooling system should be inspected. It is not uncommon to find additional component have failed or are leaking.

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.

Water Pump May Develop Coolant Leak

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.

Coolant Leak From Radiator

It is not uncommon for the radiator to develop a coolant leak. A leaking radiator will require replacement. When a leaking radiator is replaced the entire cooling system should be inspected and if any additional leaks are found they should be repaired also.

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.

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2005 BMW Z4 Questions

Experiencing a "spinning noise" underneath in the middle of the car,,, (3 answers)

Have 150K miles on it and just replaced, radiator, ball joints, arms, front brakes, new tires, battery, and front end alignment. This happens between second and third gear on my automatic transmission (25 to 40 mph). It seems to spin, then catch, and accelarate, the RPMs jump up and down when t...

Fans work but ac not running and cooling (1 answer)

Just had to replace expansion tank due to dead battery. The fans apparently did not have enough juice to run. With fans not running car got hot and shut off after blowing the expansion tank. After installing new battery. Fans and ac did not re-engage and run after electrical failure. Got fans...

auto switch on lights (1 answer)

My car lights have just stopped coming on automatically when cranking car. I have not changed switch setting from auto. However, I did just start recieving an indication of a faulty bulb (it's in the rear brake drivers side.) Could this have an effect on the proper working of the lights? I wo...

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