Audi Workshop Service and Repair Manuals

Heater Control Valve: All Technical Service Bulletins
A/C - Heater, Loss of Engine Coolant

Number:

Group:

87-05

80

December 28, 1987

Climate Control
Applies To:

ALL 5000 MODELS       1984-1987

Subject:

Engine Coolant - Loss of Fluid 

Cause:

Insufficient seal of O-ring in heater valve.

Production Change:

Improved O-ring material (EPOM).

As of:

December 1986 VIN: 44_HN079729

Service Solution:

Replace part, new P/N 431 819 809A.