Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Ambient Temperature Sensor / Switch HVAC: Service and Repair



Removing And Installing Outside Temperature Sensor

Removing outside temperature sensor







1. Switch off ignition and remove ignition key.







2. Release electrical connector to the temperature sensor -a- and unplug it.







3. Turn temperature sensor through 90° and pull it out of the heating/fresh-air unit.

Installing outside temperature sensor
1. Switch off ignition and remove ignition key.







2. Insert temperature sensor into the heating/fresh air unit and turn through 90°.







3. Push electrical connector into temperature sensor until it clicks into place.