Audi Workshop Service and Repair Manuals

Notes:

• ◆ For the operation of the additional heater it is necessary:
• ‒ the fuel line must be flush with the bottom of the vehicle, and routed so that they are protected from mechanical damage.
• ‒ for the fuel line to the additional heater to be protected from heat generation that could impair operation.
• ‒ the fuel line must not touch hot vehicle components.

• Connection for diversion of fuel for additional heater
• ◆ Fuel diversion from the fuel tank

Notes:

• ◆ Varying fuel tank designs for vehicles equipped with an electrical vs. a fuel-powered additional heater
• ◆ The connection for diverting fuel for the additional heater is only present on vehicles with a diesel engine and a fuel-powered additional heater.

=> Relevant Workshop Manual, Fuel Supply

• Metering pump -V54
• ◆ Removing and installing
• ◆ Check fuel delivery
• ◆ Check actuation => Page 01-41
• Additional heater