Check Engine Light and/or Engine Overheating on BMW Z4

The thermostat may fail resulting in engine overheating and/or illumination of the Check Engine Light. Replacement of the thermostat along with a complete inspection of the cooling system will be necessary to correct this concern.

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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Average mileage: 70,166 (61,000–77,000)
4 model years affected: 2003, 2004, 2005, 2006
6 people reported this problem
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2006 BMW Z4 77,000 mi,
Engine overheating due to water pump, BMW used a plastic connector instead of something more sturdy which naturally resulted in the plastic connector cracking.