Removing and installing thermostat with union (engine codes CASA and CASD) — VW

🧭 Before you start

Fits: VW Touareg II (7P, 2010–2018)

• Opens: coolant
• Renewed: o-ring

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Drain coolant (see the separate procedure).
2. Remove poly V-belt (see the separate procedure).
3. Remove coolant hoses (1) and (2), loosening hose clips to do so.
4. Unscrew bolts (arrows) and remove thermostat with union. [Note: Renew O-ring.]
5. Clean sealing surface.
6. Install thermostat with union, specified torque for bolts: 9 Nm. — 9 Nm (6.6 lb-ft)
7. Install poly V-belt (see the separate procedure).
8. Fill with coolant (see the separate procedure).

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