Removing and installing control unit for seat ventilation and seat heating — AUDI

🧭 Before you start

Fits: Audi Q5 (8R, 2008–2017); platform code 83

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• Make sure control unit engages audibly in retainer.Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.
• If the airbag warning lamp K75 indicates a fault following installation, you must interrogate, erase and then re-interrogate the event memory .

📋 Procedure

1. ⚠ Observe safety regulations for pyrotechnic components .Before handling pyrotechnic components (e.g. unplugging the electrical connector) the mechanic must discharge any static electricity. This can be done by briefly touching the door striker plate, or similar. — Switch on ignition.
2. With ignition switched on, disconnect battery earth wire Electrical system27Battery; Disconnecting and connecting battery.
3. Remove front seat .
4. Attach front seat to seat repair standVAS 6136.
5. Press release mechanism (arrow) and unplug electrical connector (2) at control unit for seat ventilation J799/J800(item 1).

6. Use removal wedge3409 to release retaining tab (arrow 1).
7. Swivel control unit out of retainer (arrow 2).
8. Disengage retaining tab (arrow 3) of control unit at retainer.
9. Detach control unit. [Note: Make sure control unit engages audibly in retainer.Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.]
10. ⚠ When working on a vehicle with the ignition switched on or while the drive system is active, the engine can start unexpectedly and exhaust fumes can cause a health hazard in closed rooms. Moving parts can trap or draw in parts of the body and/or clothing (safety hazard). Before switching on the ignition, perform the following steps:Move selector lever to position PActivate parking brake Switch off ignition.Open bonnetConnect battery charger (e.g. VAS 5095A) to jump-start connections of 12 V electrical system. Switch on ignition. — With ignition switched on, connect battery earth wire Electrical system27Battery; Disconnecting and connecting battery. [Note: If the airbag warning lamp K75 indicates a fault following installation, you must interrogate, erase and then re-interrogate the event memory .]

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