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:

Safety markings on battery
Safety markings on battery 1. - Fires, sparks, naked flames and smoking are prohibited when handling batteries. Avoid sparks as well as electrostatic discharge when working with cables and electrical units. Avoid short ci ...

Warning lamp
Fig. 57 Warning lamp in the instrument cluster Fig. 58 Seat belt status for the rear seats in the instrument cluster First read and observe the introductory information and safety warnings Lights up or flashes Possible cause Solution ...

Indicator lamps
First read and observe the introductory information and safety warnings Lit up Possible cause Solution Partial or complete fault in the vehicle lightinga), excluding bend lighting. b) Change the corresponding bulb or ...