
08 Maintenance and service
Battery 
08
324
Battery location
A: Left-hand drive car. B: Right-hand drive car. 1.
Battery for starting2 2. Support battery.
The support battery normally requires no more
service than the normal battery that is used for
starting.
IMPORTANT
If the following instruction is not observed
then the Start/Stop function may cease to
work after the temporary connection of an
external battery or battery charger:
•The negative battery terminal on the
car's battery must never be used for
connecting an external battery or bat-
tery charger - only the car chassis may
be used as the grounding point.
See the section "Start assistance" in "Star-
ting and driving" - where there is a descrip-
tion of how the cable clamps must be fitted.
NOTE
If the battery has become so discharged
that everything is "black" and in principle
the car does not have all the normal electri-
cal functions and the engine is subsequently
started using an external battery or battery
charger, then the Start/Stop function will be
activated. It will then be possible for the
engine to be auto-stopped but in the event
of an auto-stop the Start/Stop function may
fail to auto-start the engine due to inade-
quate capacity in the battery.
The battery must first be charged in order to
ensure a successful auto-start after an auto-
stop. At an outside temperature of +15 °C
the battery needs to be charged for at least
1 hour. At a lower outside temperature a
charging time of 3-4 hours is recom-
mended. The recommendation is that the
battery is charged using an external battery
charger.
If this is not possible then the recommen-
dation is to temporarily deactivate the func-
tion until the battery has been adequately
recharged.
For more information about recharging the
battery, see the section "Battery" in the
chapter "Maintenance and service".
2The battery for starting is described in detail on page 321.
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10 Alphabetical Index
10
377
Bag holder .............................................. 274
Battery.............................................321, 360
maintenance....................................... 321
Remote control .................................. 246
remote control key/PCC....................... 55
start assistance................................... 115
symbols on the battery....................... 321
warning symbols................................. 321
Blind spot (BLIS)...................................... 207
Blind Spot Information System, BLIS...... 207
Bluetooth
 Ÿ 
handsfree ........................................... 247
media ................................................. 239
microphone off ..................................249
streaming audio ................................. 239
transfer call to mobile ........................ 249
Bonnet, opening...................................... 306
Brake and clutch fluid..............................311
Brake light.................................................. 91
Brakes...................................................... 129
anti-lock braking system, ABS........... 129
brake light............................................. 91
brake system...................................... 129
electric parking brake......................... 131
Emergency Brake Assistance, EBA ... 129
emergency brake lights........................ 91filling brake fluid.................................. 311
symbols in the combined instrument
panel...................................................130
Bulbs, see Lighting.................................. 313
C
Calls
incoming............................................. 249
operation............................................. 249
Camera sensor................................185, 191
Car care................................................... 336
Car care, leather upholstery.................... 338
Cargo area
cargo cover......................................... 276
lighting.................................................. 93
loading................................................273
mounting points.................................. 274
safety grille.......................................... 276
safety net............................................ 275
Cargo cover............................................. 276
Car upholstery......................................... 338
Car wash.................................................. 336
Catalytic converter................................... 270
recovery..............................................284CD ........................................................... 232
Centre console........................................ 142
Chassis settings......................................166
Checking and topping up the coolant..... 310
Checking the engine oil level................... 307
Children..................................................... 33
child safety locks.................................. 40
child seats and side airbags................. 26
location in the car.................................33
safety.................................................... 33
Child safety locks...................................... 66
Child seat................................................... 33
Child seats................................................. 33
integrated two-stage booster cushion. 38
ISOFIX fixture system for child seats. . . 40
recommended...................................... 35
size classes for child seats with the ISO-
FIX fixture system................................. 40
upper mounting points for child seats. . 44
City Safety™............................................ 184
Cleaning
automatic car washes......................... 336
car wash............................................. 336
rims..................................................... 337
seatbelts............................................. 339
upholstery........................................... 338
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10 Alphabetical Index
10
383
R
Radar sensor........................................... 171
limitations........................................... 177
Radio ...................................................... 225
AM/FM ............................................... 225
DAB ................................................... 229
Menu structure ..................................259
Rain sensor................................................ 98
Rear bulbs
location............................................... 316
Rearview and door mirrors
compass............................................. 106
door....................................................103
electrically retractable......................... 103
heating................................................ 104
interior................................................. 104
Rear window, defrosting.......................... 104
Recirculation............................................ 155
Recommendations during driving............ 266
Recommended child seats, table.............. 35
Recovery.................................................. 285
Refrigerant............................................... 148
Refuelling................................................. 269
fuel cap............................................... 269fuel filler flap, electrical opening......... 269
fuel filler flap, manual opening............ 269
refuelling............................................. 269
Relay/fuse box: see Fuses....................... 325
Remote control ....................................... 245
battery replacement ........................... 246
Remote control, HomeLink
 Ÿ 
programmable ................................... 134
Remote control key................................... 48
battery replacement.............................. 55
detachable key blade........................... 52
functions............................................... 49
range..................................................... 50
Remote control key system, type appro-
val............................................................361
Resetting the door mirrors.......................104
Resetting the power windows................. 102
Retractable power door mirrors............... 103
Reverse gear inhibitor.............................. 116
Rims
cleaning.............................................. 337
Roof load, max. weight ...........................347
Rustproofing............................................ 337
S
Safety grille.............................................. 276
Safety mode.............................................. 32
Safety net................................................. 275
Seat, see Seats.......................................... 83
Seatbelt
rear seat................................................ 20
seatbelt tensioner................................. 20
Seatbelt reminder...................................... 20
Seatbelts.................................................... 18
Seats.......................................................... 83
head restraints, rear.............................. 85
heating................................................ 153
lowering the front backrest................... 83
lowering the rear backrest.................... 86
power seats.......................................... 84
Securing loads (Loading)......................... 274
Service programme................................. 306
Set time interval....................................... 181
Side airbags............................................... 26
Signal input, external.......................218, 236
SIPS bags.................................................. 26
Soot filter................................................. 272
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