Removal and Replacement

WM 270619 Removing and installing battery

Technical values






Removing battery





Main illustration showing battery installation position in the vehicle

WARNING

Caustic fluids

- Danger of chemical burns

-> Avoid contact with caustic fluid.
-> Wear personal protective gear.
-> Ensure that there is good ventilation.
-> If you do come into contact, wash off immediately with plenty of warm water and contact a doctor if necessary.

WARNING

Static battery charge

- Battery can explode
- Electrical discharges

-> Do not rub the battery with a dry cloth.

Information

- The battery is located in the battery case under the left front seat.

- The vehicle must be supplied with external power at the jump lead starting points so that the seat can be moved even when the battery is completely discharged. => External power connection, jump lead starting

Switch off all loads and remove ignition key.

Observe the warning notes and safety regulations for lead-acid batteries.=> Warning notes and safety regulations for lead-acid batteries

Information

For vehicles with a Vehicle Tracking System (VTS), please read the => 906323 Vehicle Tracking System (VTS) TI.

1. Move front left seat back and up as far as possible. Move backrest fully forward.





2. Detach front seat trim towards the front -Arrow A-.
3. Fold the carpet sections forward and remove the two fastening screws -1-.
4. Fold the seat back as far as possible -Arrow B-. With the seat in its folded position, move the seat forward again using the fore-and-aft adjustment -Arrow C-.
5. Open the four tension hooks on the battery case cover using a screwdriver.





6. Remove the battery case cover and air duct.
7. Risk of short circuit. First connect the negative cable -2- , then the positive -3-.





8. Unscrew the fastening screw on the sheetmetal bracket and remove the sheetmetal bracket.





9. Unscrew the screw on the battery mount and remove the battery mount.
10. Pull off the vent hose on the battery.

Installing battery

1. Risk of contact with caustic fluid Position the battery in the battery case below the stops, if at all possible without tilting it.





2. Position the battery mount and tighten with the fastening screw. => Tightening torque: 17.5 ftlb.
3. Position the sheetmetal bracket and secure it with the fastening screw. => Tightening torque: 6 ftlb.
4. Insert the vent hose on the battery.

Information

- Make sure that the two ends of the vent hose are routed and inserted correctly.

5. Risk of short circuit. First connect the positive cable -3- , then the negative cable -2-. => Tightening torque: 3.5 ftlb.





6. Replace the battery box cover carefully. The cover must be mounted properly.





7. Attach the four tension hooks on the battery case cover and close using the screwdriver.

CAUTION

Risk of material damage to screw connections for seat and seat frame.

-> The fastening screws for seat and seat frame are coated and must be replaced after being unscrewed.
-> Before screwing in the new fastening screws, clean the thread holes with an M10 x 1.5 tap.

8. Move the seat in its folded position towards the rear -arrow A- and then tip forward -arrow B-.





9. Screw in fastening screws -1-. => Tightening torque: 33 ftlb.
10. Clip in front seat trim -C-.

Carry out work instructions after disconnecting the battery.=> Work instructions after disconnecting the battery.