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Exploded view of auxiliary heater components > < Actuation of heater coolant shut-off valve N279

A4 Mk3

Dismantling and assembling auxiliary heater
Dismantling and assembling auxiliary heater
–  Switch off ignition (and auxiliary heater).
–  Remove the auxiliary heater → Chapter.
–  Detach the add-on components of the auxiliary heater → Chapter.
  Note
t  There are different versions of the supplementary heater control unit -J364-. The Audi Q5 is not to be fitted with -J364- with part number 8K0.xxx.xxx for example. In addition, the version depends on the production period and the type of fuel (there are different settings for certain functions for petrol and diesel). Attention is therefore to be paid to the correct version → Chapter and → Electronic parts catalogue.
t  This auxiliary heater is installed in various vehicle models. The part number changes each time this auxiliary heater is fitted in a new vehicle model (e.g. from 8K0 xxx xxx to 8R0 xxx xxx on introduction of the Audi Q5 and subsequently to 4xx xxx xxx etc.). Attention must therefore be paid to correct assignment. Care must however also be taken to ensure that an old auxiliary heater version is never installed in a vehicle previously fitted with a newer version. For example, an Audi A4 provided at the factory with an auxiliary heater with part number 8R0 xxx xxx is not to be fitted with an auxiliary heater with part number 8K0 xxx xxx → Electronic parts catalogue.
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-), attention must be paid to correct assignment when replacing individual components of the auxiliary heater → Electronic parts catalogue.
t  If an auxiliary heater with part number 4xx xxx  xxx is fitted, attention must also be paid with this version to correct encoding for the vehicle concerned (different functions are stored in the control unit depending on the type of vehicle encoded) → Electronic parts catalogue and → Vehicle diagnostic, testing and information systemVAS 5051/, “Guided fault-finding function”.
t  Some of the auxiliary heater components listed individually in the following exploded view are not available as separate replacement parts. They are combined in various repair sets → Electronic parts catalogue.
   
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”.
t  Exploded view of auxiliary heater components → Chapter.
t  Dismantling and assembling auxiliary heater → Chapter.
  A82-0419

Exploded view of auxiliary heater components > < Actuation of heater coolant shut-off valve N279