Coolant Thermostat, Removing And Installing

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

Removing

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Push the coolant hose to the radiator from below.

-- Remove the bolts -arrows- and then remove the coolant connector and coolant hose.

Fig 1: Coolant Hose Cover Bolts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the coolant thermostat from the coolant pipe.

Installing:

Fig 2: Locating Coolant Thermostat

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

There must be a metal sleeve -arrow- in the coolant connection. Replace the coolant connection if the metal sleeve is missing.

-- Clean the sealing surface on the seal.

-- Install the coolant thermostat into the coolant pipe.

Installation position: the edges on coolant thermostat and housing must align -arrows-.

Fig 3: Coolant Thermostat Installation Position
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Coat the new sealing with coolant and install it on the coolant connector.

-- Install the coolant connector and sealing ring and tighten the screws in a diagonal sequence.

-- Fill the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Install the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

Tightening Specifications:

Refer to OVERVIEW - COOLANT PUMP/COOLANT THERMOSTAT