Cooling System Specifications: Notes

NOTE: Serpentine belt tension is automatically adjusted by tensioner.

COOLING SYSTEM SPECIFICATIONS

Application

Specification

After Run Cooling Fan Thermal Switch ⁽¹⁾

On (Closed Circuit)

219°F (104°C)

Off (Open Circuit)

217°F (103°C)

Coolant Capacity ⁽²⁾

One Heat Exchanger

9.5 Qts. (9.0L)

Two Heat Exchangers

11.4 Qts. (10.8L)

Two Heat Exchangers & Additional Water Heater

12.0 Qts. (11.4L)

Cooling Fan Thermal Switch ⁽³⁾

First Stage

183-192°F (84-89°C)

Off

168-181°F (76-83°C)

Second Stage

194-203°F (90-95°C)

Off

180-192°F (82-89°C)

Thermostat

Starts To Open

176°F (80°C)

Fully Open

221°F (105°C)

Opening Stroke

.28" (7mm)

Reservoir Cap Opening Pressure

19-22 psi

⁽¹⁾	Switch is located on thermostat housing.See Fig 3 .

⁽²⁾	Total coolant quantity may vary depending on vehicle equipment. Coolant volume listed are for vehicle with manual transmissions. For vehicles with automatic transmission, increase volume by 0.1 Qts. (0.1L).

⁽³⁾	Coolant fan thermal switch is located in right side of fan. See Fig 2 .

Fig 1: Coolant Hose Routing Diagram (2.8L VR6 - Engine Code AES)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 2: Identifying Radiator, Cooling Fan & Vacuum Valve Assembly (2.8L VR6 - Engine Code AES)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 3: Identifying Thermostat Housing & Components (2.8L VR6 - Engine Code AES)

Courtesy of VOLKSWAGEN UNITED STATES, INC.