Removing and installing thermostat for large coolant circuit - all engine codes except CUKB, CXUA — AUDI

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

• Opens: coolant
• Special tools named: T10527/1
• Renewed: seal

Don't miss

• Disregard (arrows).
• Do not reuse coolant.

🔧 Engine codes this applies to

📋 Procedure

1. Drain coolant .
2. Unplug electrical connector (1) at charge pressure sender G31 / intake air temperature sender 2G299. [Note: Disregard (arrows).]
3. Move air hoses clear at air pipe.
4. Release fasteners (arrows) with release tool T10527 and T10527/1, and detach air pipe (1).
5. Release hose clip (4) and detach coolant hose (3).

6. Remove bolts (arrows) and detach cover (2) from thermostat housing.
7. Turn thermostat anti-clockwise (arrow) using special wrench T10508 and detach. [Note: Renew seal.]
8. Lubricate seal lightly with coolant.
9. Bring thermostat into position with special wrench T10508, press down slightly and turn clockwise (arrow) as far as stop. [Note: Do not reuse coolant.]
10. Fill up with coolant .

Other AUDI procedures

• Removing and installing high-voltage wire for electrical air conditioner compressor
• Removing and installing fuel pump control unit J538 - vehicles with high-voltage system
• Removing and installing intake air temperature sender G42 / intake manifold pressure sender G71
• Removing and installing sump - engine codes CJZA, CYVB – Audi
• Removing and installing coolant temperature sender G62 - engine codes CUKB, CXUA
• 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