249 Tires, Wheels
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Inflating the space-saver tire (ML 55 AMG only)
1. Remove air pump from compartment behind the 
space-saver spare wheel.
2. Open lid (arrow) and pull out filler hose (1) with 
pressure gauge and electrical plug (2). Observe 
manufacturer’s instructions.
3. Unscrew tire valve cap from space-saver tire valve.
4. Screw filler hose (1) onto space-saver tire valve.5. Plug air pump electrical plug (2) into electrical 
outlet in front passenger footwell or rear cargo 
compartment.
6. Start the engine and switch on the air pump.
7. Operate air pump (approximately 8 minutes) until 
pressure gauge displays 61 psi (4.2 bar).
8. Switch off air pump and turn off the engine.
9. Unscrew filler hose from space-saver tire. Reinstall 
tire valve cap.
Note: 
Excessive tire air pressure should be released using the 
vent screw.
3
12
Wa r n i n g !
When working on the vehicle with the engine 
running, always set the parking brake in addition 
to shifting the gear selector lever to position “P”.Wa r n i n g !
To prevent possible injury when unscrewing air 
pump filler hose from space-saver tire valve after 
inflating the tire, use a rag since the tire valve 
could be hot. 
310 Index
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car careIndex
Tires
Driving instructions  ................................................. 177
Rims and tires  ...........................................................288
Rotating wheels ......................................................... 241
Tire inflation pressure  .............................................250
Tire replacement  .......................................................240
Winter driving instructions  .................................... 180
Tow-away alarm ................................................................ 36
Switching off ................................................................ 36
Towing the vehicle .........................................................255
Stranded vehicle  .......................................................259
Transmission selector lever, manually unlocking 259
Trailer operation  ............................................................ 198
Trailer towing  ................................................................. 190
Transmission .................................................................. 165
Transmission control - LOW RANGE mode  ...............209
Transmission fluid level  ...............................................234
Transmission selector lever, manually unlocking ....259
Traveling abroad  ............................................................ 182
Trip computer  ................................................................... 83
Trip odometer  ................................................................... 80
Trunk ................................................................................. 34
Opening ........................................................................ 28
Trunk lamp  ...................................................................... 111Turn signal failure  ........................................................... 91
Turn signal lamp, side .................................................. 266
Turn signals  ......................................................................90
UUnlocking the vehicle ...................................................... 27VVanity mirrors  ................................................................ 113
Vehicle jack  .................................................................... 237
Vehicle keys  ......................................................................24
Ve h i c l e  t o o l s
Screwdriver ............................................................... 237WWarranty coverage  ........................................................ 284
Washing the vehicle  ..................................................... 280
What you should know at the gas station  .................. 212
Wheel bolt wrench  ........................................................ 237
Wheels ............................................................................ 240
Changing wheels ...................................................... 245