Engine management system AGK 2.8 TDi since November 1997 and ATA 2.8 TDI since January 1999 (II).
Glow plug relay, glow plugs, coolant temperature sensor

| G2 | coolant temperature sensor |
| G62 | coolant temperature sensor |
| J52 | glow plug relay |
| Q6 | glow plugs |
| S39 | glow plug fuse |
| T4a | wiring connector, 4-pin, near battery* |
| T5 | wiring connector, 5-pin, near the battery (only for vehicles with electronic engine immobilizer) |
| T6 | wiring connector, 6-pin |
| (11) | connection to "ground" |
| (D13) | connection (50) in the wiring kit on the front left |
| * | on vehicles without electronic engine immobilizer |

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