351 Practical hints
Unlocking/locking in an emergency
SmartKey with KEYLESS-GO*
1Battery
2Tilt battery up
3Mechanical keyReplacement battery: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 348).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
SmartKey housing.
Using mechanical key3, apply pres-
sure to position2.
Battery1 tilts up slightly.
Pull out battery1 in direction of ar-
row.
Using a lint-free cloth, insert new bat-
tery with the plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can it
manually.
1Release knob
Open the trunk.
Remove the trim inside the trunk on the
right-hand side.
Pull release knob1 in the direction of
arrow.
The fuel filler flap can be opened.
iThe required replacement battery is
available at any authorized
Mercedes-Benz Center.
430 IndexTow-away alarm 85
Arming 85
Disarming 85
Disarming for transport 85
Towing eye bolt (vehicle tool kit) 345
Installing 373
Towing the vehicle 371
Tracking services
For stolen vehicle 250
Traction 170, 406
Transmission see Automatic
transmission 278
Tread depth (tires) 292
Trip computer 148
Trip odometer
Resetting 132
Trunk
Auxiliary fuse box 374
Closing from the inside 100
Lock button, KEYLESS-GO* 95
Locking separately 105
Message in display 334
Opening 97
Opening from inside vehicle 97
Opening from the inside 99Parcel net 238
Tie-down hooks 230
Trunk lid 97, 99, 100
Trunk lock 349
Unlocking in an emergency 349
Unlocking separately 105, 106
Unlocking with SmartKey 90
Trunk lid
Closing 98
Trunk lid emergency release 104
Trunk lid opening/closing system* 99
Turn signal lamps
Replacing bulbs 353, 354
Turn signals 47
Additional in mirrors 353
Cleaning lenses 298
Front bulbs 353, 356
Rear bulbs 354, 358
Turning off
Engine 53
Turning off the engine 54U
Units
Setting speedometer units 154
Setting temperature units 154
Unlocking 30, 88
Driver’s door in an emergency 348
Fuel filler flap 269
Global 89
Global (SmartKey with
KEYLESS-GO*) 94
Glove box 231
In an emergency 348
Selective settings 89, 94
Trunk in an emergency 349
Trunk lid with SmartKey 90
Trunk lid, separately 105, 106
Vehicle in an emergency 249
With the SmartKey 30
With the SmartKey with
KEYLESS-GO* 32, 91
Upgrade signals
Tele Aid* 248
Uphill driving
Cruise control 204
