Audi Workshop Service and Repair Manuals

• ‒ Removing and installing the operating and display unit -E87 with two displays .
• ‒ Removing and installing the operating and display unit -E87 with one display => Page 87-71.

Notes:

• ◆ Prior to removal, interrogate -E87 fault memory.
• ◆ After replacing -E87, always:
  - Check code and enter new code if necessary.
  - Perform basic setting.
  - Interrogate fault memory.
• ◆ The display on -E87 may be switched from °Cto °F and vice versa by pressing the "temperature +" button with the "recirculated air" button pressed.
• ◆ If the -E87 continues to function after the ignition has been switched off, use the current flow diagram to check for a short circuit to positive in the wiring to connector -D- contact -1- (type with two displays) or contact -10- (type with one display) (connection auxiliary heater operation).

• ◆ If the display of a newly installed operating and display unit flashes (for approx. 2 minutes) after the ignition is switched on, encode the operating and display unit and perform basic setting.
• ◆ If an -E87 operating and display unit with part number as of index "H" is replaced, the temperature is displayed on -E87 in °F in vehicles in which the assignment of the ignition key is transferred from the dash panel insert. The display can be converted from °F to°C in these vehicles by actuating the "temperature +" key with the "recirculated air button" pressed. Each ignition key must be converted individually (as all ignition keys are not generally available in the workshop, the customer must be instructed as to how to perform the conversion).
• ◆ Up to and including model year 2000 operating and display units with two displays were installed. As of model year 2001 there was a changeover to the type with one display.

Note for the type with one display:

This operating and display unit are available in four different types (for vehicles with or without heated seats, for vehicles with or without radio navigation system).

=> Parts List

Notes for the type with two displays:

• ◆ If the two display zones in the operating and display unit -E87 with part number 8L0 820 043 up to and including index "C" are not illuminated when ignition is switched on service voltage supply terminal 58D (dimmer) to the -E87 according to current flow diagram (electrical check).

• ◆ If the two display zones in the operating and control unit -E87 with part number 8L0 820 043 as of index "D" are not illuminated when the ignition is switched on, check voltage supply from terminal 58s (search light) to -E87 (Electrical check).
• ◆ If an operating and display unit -E87 with part number 8L0 820 043 as of index "D" is installed in a vehicle from model year 1997, the brightness of the switch illumination cannot be altered (Electrical check).
• ◆ If an operating and display unit -E87 with part number 8L0 820 043 as of index "C" is installed in a vehicle from model year 1998, the brightness of the switch illumination cannot be altered (Electrical check).
• ◆ The coding for the operating and display unit -E87 is different in vehicles with map-controlled cooling to that for vehicles without map-controlled cooling (for 1.6l engine to be gradually introduced as of model year 1999).

=> Electrical System; Repair group 01

=> Parts List

• ◆ The display zone and operating controls are illuminated via LED's (not replaceable).

Removing and installing the operating and display unit -E87 with two displays

• ‒ Remove radio.

=> Electrical System; Repair group 91

• ‒ Remove panel for dash panel centre section.

=> General body repairs,Interior; Repair group 70

• ‒ → Remove bolts -A-.
• ‒ Remove operating and display unit.

Notes:

• ◆ After installing operating and display unit -E87, ensure proper seating of moulded hose -C- (from temperature sensor -G56 to blower -V42).
• ◆ When installing bolts -A-, insert the bracket for trim -B- on the correct side.

• ‒ → Press back catches on connector and detach connector.

Removing and installing the operating and control unit -E87 with only one display

Removing

• ‒ Remove radio or radio navigation system:

=> Radio, telephone, navigation; Repair group 91; Navigation System

• ‒ Reach through the opening and push the operating and display unit back

Notes:

• ◆ → The operating and display unit is secured with 4 retaining clips -A- in the centre console.
• ◆ When replacing an operating and display unit, note the precise layout (e.g. with or without breakthrough for the heated seat switches)

=> Parts List

• ◆ To remove the switches for the heated seats, press back the lugs -B- and pull the switch -C- back out of the operating and display unit.

• ◆ If the dash panel temperature sensor -G56 produces a faulty measurement, check the intake grille on the trim panel - must not be closed.
• ◆ → In this type of the operating and display unit the connector -A- is no longer occupied.
• ◆ The heated rear window is activated via the connector -F-.