Removing and installing valve block for lumbar support air cushions, seat and backrest bolster adjusters - from 09.2012 onwards — AUDI

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X

Don't miss

• To carry out repairs, the pneumatic line from the compressor is not disconnected at the connection; instead it is severed according to the procedure described .
• Before disconnecting pneumatic lines, mark allocation of lines to connections on valve block with a waterproof felt-tip pen.

📋 Procedure

1. Remove backrest cover panel . [Note: To carry out repairs, the pneumatic line from the compressor is not disconnected at the connection; instead it is severed according to the procedure described .]
2. Sever pneumatic line (1) to valve block N475/N477 at the following point:
3. Unplug electrical connector (8).
4. Before disconnecting pneumatic lines, mark allocation of lines to connections on valve block with a waterproof felt-tip pen.
5. Disconnect pneumatic lines (1 ...7) at valve block (A).

6. To do so, press release mechanism (2)(arrow) and disconnect pneumatic line (1) at the same time.
7. Pull rubber buffers to lengthen them (arrow A).
8. At the same time, pull valve block off rubber buffers (arrow B).
9. Connect pneumatic line .
10. Press pneumatic lines on again and then pull lines to check that plug-in connectors are engaged properly.

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Installing air hoses and hose clips – Audi 5.0 BUH
• Removing and installing fuel gauge sender 3 G237 (up to model year 2013)
• Adjusting selector mechanism (vehicles from 11.00 onwards)
• Removing and installing washer fluid reservoir – Audi A4 B8
• Removing and installing mechanical exhaust gas recirculation valve