Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Interior Temperature Sensor Fan, Removing And Installing: Notes
The same Interior Temperature Sensor Fan -V42- -B- is currently installed in both versions of the Climatronic Control Module -J255- A/C display and control heads ("Basis" -E- and "Convenience" -F-). The blowers run at different RPMs (approximately 2, 500 to 3, 200 RPM on the "Basis" version and approximately 2, 800 to 3, 500 RPM on the "Convenience" version) due to the different component location in the display and control head using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
Depending on the version of the Climatronic Control Module -J255- A/C display and control head, there may be a molded seal -C-. Re-install it if necessary.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.