| | Removing and installing parts of cooling system | 
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          WARNING| When doing any repair work, especially in the engine compartment, pay attention to the following due to the cramped conditions: | 
 | t | Route all the various lines (e.g. for fuel, hydraulics, activated charcoal filter system, coolant, refrigerant, brake fluid and vacuum) and electrical wiring in their original positions. | 
 | t | Ensure that there is sufficient clearance to all moving or hot components. | 
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      Note| t | When the engine is warm, the cooling system is under pressure. If necessary, release pressure before beginning repair work. | 
 | t | Hoses are secured with spring-type clips. In case of repair, only use spring-type clips. | 
 | t | Spring-type clip pliers -VAS 5024A- are recommended for removal and installation of spring-type clips. | 
 | t | When installing coolant hoses, route stress-free so that they do not come into contact with other components (observe markings on coolant connection and hose). | 
 | Test for leaks in cooling system using cooling system tester -V.A.G 1274- and adapter for cooling system tester -V.A.G 1274/8- and adapter for cooling system tester -V.A.G 1274/9-. | 
 | Parts of cooling system - body side  → Chapter. | 
 | Parts of cooling system - engine side, part l (engine codes AEH, AKL)  → Chapter. | 
 | Coolant hose schematic diagram, part l (engine codes AEH, AKL)  → Chapter. | 
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