A2
| Checking, removing and installing components |

| 1 - | Heating element for additional heater -Z35- |
| q | Only provided for vehicles with diesel engine, installation depends on equipment level → Chapter. |
| q | Different versions → Chapter. |
| q | Depending on the equipment level, vehicles built up to 2002 may have an electric additional heater or a fuel-powered additional heater → Chapter, → Chapter, → Relevant Workshop Manual Diesel Direct Injection and Glow Plug System; Repair group 01 and → Additional Heater; Repair group 82 |
| q | Removing and installing → Chapter |
| q | Checking function → Chapter |
| 2 - | Bolt |
| 3 - | Connector bracket |
| q | Only in vehicles with a heating element for additional heater -Z35- |
| 4 - | Heat exchanger |
| q | Removing and installing → Chapter |
| 5 - | O-ring seal |
| q | Replacing |
| 6 - | Clip |
| q | Replacing |
| 7 - | Coolant pipes |
| 8 - | Heater |
| q | Removing and installing → Chapter |
| q | Dismantling and assembling the heater → Chapter |
| 9 - | Sealing plate |
| q | Check, and replace if the gasket is damaged. |
| 10 - | Fresh-air intake duct (in the passenger compartment) |
| 11 - | Clip |
| 12 - | Series resistor for a fresh-air blower with an overheating cut-out -N24- |
| q | Removing and installing → Chapter |
| 13 - | Fresh-air/recirculated-air flap positioning motor -V154- (and bracket) |
| q | Check function → Chapter |
| q | Removing and installing → Chapter |
| 14 - | Fresh air blower -V2- |
| q | Removing and installing → Chapter |
| 15 - | Dust and pollen filter |
| q | Removing and installing → Chapter |
| q | Observe the replacement interval for dust and pollen filter → Booklet |
| 16 - | Filter frame |
| q | for dust and pollen filter |
| 17 - | Filter cover |
| q | for dust and pollen filter |
| 18 - | Push-fit components |
| q | for filter cover |
| 19 - | Flexible shaft |
| q | to step-up gear/air distribution |
| q | Removing and installing → Chapter |
| 20 - | Heater controls/base plate |
| q | Removing and installing → Chapter |
| 21 - | Heater controls/electronics |
| q | There are different versions in vehicles with petrol and diesel engines (with and without an Econ button) → Chapter and → Parts List |
| q | There are different versions in vehicles with petrol engine (in the 1.6 l petrol direct injection engine (FSI) there is an additional switch installed in the heater control electronics) → Chapter and → Parts List. |
| q | Removing and installing → Chapter |
| q | Check the function of the fresh-air and recirculated-air switch -E159- → Chapter |
| q | Check the function of the heated rear window switch -E15- → Chapter |
| q | Check the function of the Econ button → Chapter |
| q | In “defrost mode”, air recirculation is not possible (recirculated-air mode is switched off approx. 15° before the rotary knob for air distribution reaches the “air to windscreen” limit stop. |
| 22 - | Trim panel |
| q | For heater controls |
| 23 - | Flexible shaft |
| q | To step-up gear/temperature flap |
| q | Removing and installing → Chapter |
| 24 - | Clip |
| 25 - | Bottom section of air distributor housing |
| q | Different versions in vehicles with and without a heating element for additional heater -Z35- |
| q | With a cutout for routing electrical wiring in vehicles with an heating element for additional heater -Z35- |
