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Preparation for checking auxiliary heater components > < Checking electrical components of auxiliary heater

A4 Mk3

Checking actuation and electrical connections of auxiliary heater
Checking actuation and electrical connections of auxiliary heater
–  Switch off the ignition and the auxiliary heater.
–  Remove the right fog light trim → Electrical system; Rep. Gr.94.
–  Remove the right fog light (not necessary on the Audi Q5) → Rep. Gr.94.
   
–  Release the 6-pin connector -A- and the 2-pin connector -B- (press towards left side of vehicle and unfasten the catches whilst pressing the connector) and unplug.
  Note
t  For greater clarity the heater is shown from the rear.
t  As of 10.2010 auxiliary heaters with part number 4xx xxx  xxx are gradually to be introduced. Service installation of this version of the auxiliary heater is also possible in vehicles originally fitted with an auxiliary heater with part number 8R0 xxx xxx or 8K0 xxx xxx. As however there are differences between certain components of the various auxiliary heater versions (e.g. the 2-pin connector for the power supply to the auxiliary heater control unit -J364--B-), attention must be paid to correct assignment when replacing individual components of the auxiliary heater → Electronic parts catalogue.
  A82-10108
t  The Audi A4, A5 and Q5 are currently provided with an auxiliary heater remote control hand transmitter with no display → Owner's manual.
t  Auxiliary heaters with an auxiliary heater control unit -J364- with part number 8xx xxx. xxx are only designed for actuation by way of a hand transmitter with no display. As of 10.2010, auxiliary heaters with a -J364- with part number 4xx xxx  xxx are gradually being introduced. With these auxiliary heaters, the version of the hand transmitter (with or without display) must have been properly encoded in -J364-. This also applies to service replacement of a -J364- with part number 8xx xxx  xxx by a -J364- with part number 4xx xxx  xxx → Vehicle diagnostic, testing and information systemVAS 5051/, “Guided fault-finding function”
t  Pay attention to correct assignment of the auxiliary heater remote control hand transmitter to the remote control receiver for auxiliary heater -R64- (different versions for hand transmitter without and with display) as well as to correct assignment and encoding of -J364- → Electronic parts catalogue and → Vehicle diagnostic, testing and information systemVAS 5051/, “Guided fault-finding function”.
–  Implement the electrical checks as indicated in “Guided fault-finding” → Vehicle diagnostic, testing and information systemVAS 5051/, “Guided fault-finding function”.
  A82-0419

Preparation for checking auxiliary heater components > < Checking electrical components of auxiliary heater