volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Bypass Thermostat Overview|Page 2578 > < Thermostat, Engine Cooling|Specifications|Page 2575
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Thermostat: Service and Repair
Bypass Thermostat Overview

Bypass Thermostat Overview

1

Retaining Clip

2

Lower Housing

3

Operating Element

4

Spring

5

O-ring

6

Upper Housing

Checking the Bypass Thermostat

-

Remove the operating element - item 3 -.

-

Warm the operating element in a coolant bath.

Opens at: approximately 75 °C (167 °C)

Stops opening at: approximately 85 °C (185 °F)

Opening travel: approximately 5 mm

Bypass Thermostat Location

Bypass thermostat for coolant circuit transmission oil:

Arrow on bottom part of thermostat points to heater core.

Bypass thermostat for coolant circuit turbocharger:

Arrow on bottom part of housing points to auxiliary coolant pump (V50).

Bypass Thermostat Overview|Page 2578 > < Thermostat, Engine Cooling|Specifications|Page 2575