A stuck thermostat can make your BMW run too cold (poor heat, bad economy, a check-engine light) or too hot (overheating). BMW's electronically controlled thermostats are a common wear item. At Inline Autohaus in Chattanooga, we diagnose and replace failing thermostats to restore proper engine temperature.
BMW thermostats often include an electric heater and wear out, sticking open (running cold) or closed (overheating). Both conditions trigger faults and hurt performance. A new thermostat restores correct, stable operating temperature.
Can I drive with a stuck thermostat?
If it's stuck open you can usually drive but with poor heat and economy; if stuck closed it can overheat, which can damage the engine.
Why does my BMW show a cold-running fault?
Usually a thermostat stuck open, keeping the engine below its target temperature.
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