Cooling System - Coolant Leak at Water Pump and Hose Area
19 Coolant leak at connection of water pump and hose leading to the heater core
19 13 36
2033491/1
April 15, 2013
Vehicle Information
Condition
Customer may report coolant leaking from the engine area.
Technical Background
The leak can be traced to the connection of the water pump and the hose leading to the heater core (Figure 1). The seal ring is not the cause of the
leak.
Production Solution
Not applicable.
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 692
Service
1. Visually inspect the area of the suspected coolant leak.
2. Classify suspected coolant leak as Category 1, Category 2, or Category 3, according to the Categorization of Leaks table included in the Audi
Warranty Policies and Procedures Manual.
If the leak falls into Category 1 or Category 2, proceed as instructed by the table. If the leak falls into Category 3, proceed to step 3.
3. After confirming that the leak is a category 3 leak, take a photograph of the leak (use leak talcum spray if necessary) and attach a printout of the
photograph to your warranty paperwork.
4. Replace the water pump (06H121026CF), seal ring (N 90365302), and the hose to the heater core (06H121065D).
Note:
Replacing only the seal ring may not prevent the leak from reoccurring.
Warranty
Audi A4 Quattro Sedan (8K2) L4-2.0L Turbo (CAEB) Page 693
Required Parts and Tools
Additional Information
The following repair procedures will be necessary to complete this procedure:
^ Repair Manual >> Engine >> Engine Mechanical >> 19 Cooling System >> Removal and Installation >> Coolant Pump
^ Repair Manual >> Engine >> Engine Mechanical >> 19 Cooling System >> Removal and Installation >> Small Coolant Pipe
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
