Fuel Level Sensor Installation Details (all models)
1 - Fuel tank; 2 - Fuel level sensor; 3 - Sealing ring; 4 - Fuel suction line; 5 - Ventilation hose; 6 - Electrical wiring connectors
1. On models with the corresponding configuration (code ET2), activate the service mode of the TELE AID emergency call system (see Section Activation/deactivation of the service mode of the TELE AID emergency call system).
2. Turn on the auxiliary battery and connect it to the standard battery, then disconnect the negative cable from the latter.
7 - Auxiliary battery
8 — Positive wire terminal of the module
9 — Terminal of the negative wire of the module
W10 - Battery ground
3. If the fuel tank (1) is full, pump out about 8 liters of fuel from it (see Section Emptying the fuel tank).
Text republished from the website [MercedesMan.ru]
4. Remove the carpet panel in the trunk of the vehicle.
5. Unscrew the fuel level sensor cover (2).
6. Disconnect the fuel intake line (4) and ventilation hose (5) from the sensor (2) - seal the open ends of the fittings.
7. Disconnect the electrical wiring (6) and remove the sensor assembly (2) from the fuel tank.
8. Installation is carried out in reverse order.
9. Finally, deactivate the service mode of the TELE AID system (see Section Activation/deactivation of the service mode of the TELE AID emergency call system) and clear the memory of the on-board diagnostic system processor (see Chapter Engine electrical systems).