Volkswagen Golf Service & Repair Manual: Removing and installing coolant valve for high-voltage battery -N688-

Volkswagen Golf Service & Repair Manual / Heating, air conditioning / Air conditioner / Coolant circuit / Removing and installing coolant valve for high-voltage battery -N688-

Special tools and workshop equipment required

Hose clamps, up to 25 mm -3094-

Removing and installing coolant valve for high-voltage battery -N688-

Hose clip pliers -VAS 6362-

Removing

Removing and installing coolant valve for high-voltage battery -N688-

–	Observe safety precautions → Chapter „Safety precautions when working on the cooling system“.

–	Disconnect electrical connector -2-.

Note

Place a cloth underneath to absorb escaping coolant.

–	Unscrew bolts -arrows-.

When the engine is warm, the cooling system is under pressure. Danger of scalding due to steam and hot coolant. There is a risk of injury to the skin and parts of the body due to scalding.Always wear safety gloves.Always wear safety goggles.Proceed as follows to release the pressure: cover the cap of the coolant expansion tank with a cloth, and open it carefully.

–	Clamp off coolant hoses using hose clamps -3094-, and remove coolant hoses. To do this, release hose clips -3-.

–	Remove coolant valve for high-voltage battery -N688-.

Installing

Installation is carried out in the reverse order. When installing, note the following:

Note

Secure hose connections with hose clips corresponding to the standard version of the equipment → Electronic Parts Catalogue.

–	Check coolant level → Rep. gr.19.

Specified torques

Assembly overview - coolant valves → Rep. gr.19.

Removing and installing coolant valve for high-voltage battery -N688-

Incorporation of heat exchanger for high-voltage battery into coolant circuit of high-voltage system

Note Fill coolant and bleed coolant circuit → Rep. gr.19. The illustration below shows only some of the compone ...

Removing and installing coolant pump for high-voltage battery -V590-

Special tools and workshop equipment required Hose clamps, up to 25 mm -3094- ...

Other materials:

Removing and installing remote control receiver for auxiliary coolant heater -R149-, Golf Variant
Note If the remote control receiver for auxiliary coolant heater -R149- is renewed, the remote control receiver for auxiliary coolant heater -R149- needs to be adapted to the auxiliary and supplementary heater using the vehicle diagnostic tester ...

Wiring open circuit with two repair positions
Repair position with interlinked wire. – Place the wire to be repaired to the side at two points (about 20 cm to both sides of the relevant repair position). – If necessary, unbind the wiring harnes ...

Vehicle lifting points
Fig. 205 Lifting point at front for the lifting platform or vehicle jack Fig. 206 Lifting points at rear for the lifting platform or vehicle jack First read and observe the introductory information and safety warnings The vehicle may only be lifted at the points shown in the illustrati ...