Coolant Hose Connection Diagram

WARNING: This page is about a different car, the 2014 Volkswagen Jetta, 2013 Volkswagen Jetta, 2012 Volkswagen Jetta, and 2011 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Coolant Hose Connection Diagram

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Reservoir
- With cap
- Pressure relief valve inside cap, checking, refer to COOLING SYSTEM, CHECKING FOR LEAKS .
Intake Manifold
Throttle Valve Control Module -J338-
Coolant Distribution Housing
Heater Core
- Replace the coolant after replacing the heater core.
Coolant Pipe
Bypass Thermostat
- Only for vehicles with an automatic transmission
- Overview, refer to Figure.
- Checking, refer to Figure.
Transmission Fluid Cooler
- Only for vehicles with an automatic transmission
Coolant Hose Connections at Top of Radiator
Coolant Hose Connection at Bottom of Radiator
Radiator
- Replace the coolant after replacing the heater core.
- Removing and installing, refer to RADIATOR, REMOVING AND INSTALLING .
Engine Oil Cooler
Preheater
- Only on vehicles with an engine preheater
Coolant Pump and Coolant Thermostat
- Coolant pump, removing and installing, refer to COOLANT PUMP, REMOVING AND INSTALLING .
- Coolant thermostat, removing and installing, refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
- Checking coolant regulator -item 22-.
Cylinder Head/Cylinder Block
- Replace the coolant after replacing the heater core.