The external temperature sensor on a BMW is placed within the underbody plastics that extend very close to the road. As a result it's easy to damage by rolling into a low curb or parking lot tire stop. The first sign you may have a problem with your external temperature sensor is if you have a really low reading. This is caused by the sensor either being damaged, missing or having an open circuit; the wires leading to the sensor may have torn off in an impact.
All hope is not lost! You can restore the function of your outside temperature reading by purchasing this repair kit.
Includes solder filled heat shrink connectors, contact leads with wire, plug housing, temperature sensor, 10 pack of zip ties, and a panel mount zip tie for mounting the sensor.
Use our below PDF as a guide for an easy installation.