2011 Mercedes SL-Class Owner's Manual - Page 271

Replacing SmartKey batteries Locking the vehicle If you cannot lock the vehicle with the SmartKey or with KEYLESS-GO, lock it as follows: X Open the driver's door. X Close the passenger door and the trunk. X Press the central locking switch (Y page 73). X Check to see whether the locking knob on the passenger door has moved down. X If necessary, push it down manually. X Exit the vehicle and close the driver's door. X Remove the mechanical key from the SmartKey (Y page 267). X Check whether the trunk is locked. X If it is not locked, lock it with the mechanical key (Y page 77). Except for the driver's door, the vehicle should now be locked. 269 Lowering the load assist manually If the load assist feature does not fully lower the retractable hardtop into the trunk compartment and you are unable to close the trunk lid, follow the instructions below. X X X Insert mechanical key ; into the driver's door lock. X Turn mechanical key ; clockwise to position 1. The driver's door is locked. X Turn mechanical key ; back and remove it from the driver's door lock. Open the trunk (Y page 73). Remove the trunk floor from the trunk. X Have a second person lift and hold the retracted hardtop. X Take the hex-socket wrench from the vehicle tool kit (Y page 224). X Using hex-socket wrench :, carefully turn locking screw ; approximately one quarter of a turn counterclockwise. X Hook luggage cover into holders (Y page 159). X Let go of the hardtop. It should gradually lower into the trunk. X When hardtop is completely lowered, return locking screw ; clockwise to its original position. ! Do not overtighten the screw. X X Replace the trunk floor. Close the trunk. X Contact an authorized Mercedes-Benz Center as soon as possible. i This procedure does not arm the antitheft alarm system, nor does it lock the fuel filler flap and the storage compartments. The storage compartments can be locked separately (Y page 161). Replacing SmartKey batteries If the batteries in the SmartKey are discharged, the vehicle can no longer be Z Practical hints