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.
Air Ionization System Control Module -J897-, REMOVING AND INSTALLING: Installing
Installation is carried out in the reverse order while observing the following:
-- Check seal -E- for damage and proper seating.
-- Reinstall the removed parts in the opposite order.
-- Check the event memory of the front A/C display control head, the Climatronic Control Module -J255- (and the Rear A/C Display Control Head -E265-) and erase any displayed malfunctions, see Vehicle Diagnostic Tester in the "Guided Fault Finding" function if necessary.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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