Engine Coolant Temperature (ECT) Sensor G62, removing and installing

WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, and 2007 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Engine cold.

Briefly open coolant expansion tank cap to reduce residual pressure in cooling system.

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Remove rear engine cover.

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Free up fuel line and line to EVAP canister on air guide pipe.
Remove air guide hose by loosening hose clamps - 2 and 5 -.
Lay aside air guide hose with connected lines - 3 and 4 -.

NOTE:

Ignore - 1 -.

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Disconnect electrical connector - arrow - at Engine Coolant Temperature (ECT) Sensor G62.

NOTE:

Lay a cloth below to catch escaping coolant.

Remove retaining clip and remove Engine Coolant Temperature (ECT) Sensor G62.

NOTE:

To improve clarity, the removed engine is shown.

Installing

Installation is in reverse order of removal, note the following:

NOTE:

Replace O-ring.
To prevent coolant loss, immediately insert new Engine Coolant Temperature (ECT) Sensor G62 in support.
Secure all hose connections using hose clamps appropriate for the model type .

Check coolant level → Filling .