Page 30 of 381

Instrument cluster
27Function Page
1 ABS warning lamp
288
2 LIM indicator lamp
154
3
ESP
®
warning lamp 289
4 Display unit for the speed-
ometer
5
Distance warning lamp*
1 61
6 Brake system warning lamp
290
7 Tyre pressure warning
lamp*
2 291
8 Turn signal indicator lamp,
left
94
9 Adjusts the instrument
cluster lighting: dimmer
a Reset button
114
b Adjusts the instrument
cluster lighting: brighter Function Page
c Turn signal indicator lamp,
right
94
d Seat belt warning lamp
291
e Diesel engine: preglow indi-
cator lamp
103
f SRS warning lamp 41,
290 g Engine diagnostics warning
lamp
291
h Main-beam indicator lamp
95
j Rev counter
114
k Fuel gauge
l Fuel filler cap location: cap
is on the right at the rear Function Page
m Reserve tank warning lamp
293
n Total distance recorder
120
o Trip meter
114
p Multi-function display
114
q Gearshift program display
111
r Transmission position dis-
play
108
s Depending on the setting in
the on-board computer:
120
• outside temperature
3
• digital speedometer t Speedometer (the unit can
be changed to miles in the
on-board computer)
128
u Clock
129
1
On vehicles without Distronic* the symbol lights up briefly but has no function.
2 Only on vehicles with tyre pressure monitor*.
3 Vehicles for the United Kingdom: the outside temperature is always displayed in the digital speedometer. At a glance
* optional
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Page 32 of 381

Instrument cluster
29Function Page
1 ABS warning lamp
288
2 LIM indicator lamp
154
3
ESP
®
warning lamp 289
4 Display unit for the speed-
ometer
5
Distance warning lamp*
4 61
6 Brake system warning lamp
290
7 Tyre pressure warning
lamp*
5 291
8 Turn signal indicator lamp,
left
94
9 Adjusts the instrument
cluster lighting: dimmer
a Reset button
114
b Adjusts the instrument
cluster lighting: brighter
c Turn signal indicator lamp,
right
94 Function Page
d Seat belt warning lamp
291
e Diesel engine: preglow indi-
cator lamp
103
f SRS warning lamp 41,
290 g Engine diagnostics warning
lamp
291
h Main-beam indicator lamp
95
j Rev counter
114
k Fuel gauge
l Fuel filler cap location: cap
is on the right at the rear
m Reserve tank warning lamp
293
n Total distance recorder
120
o Trip meter
114
p Multi-function display
114
q Gearshift program display
111 Function Page
r Transmission position dis-
play
108
s Depending on the setting in
the on-board computer:
120
• outside temperature
6
• digital speedometer t Speedometer
128
u Clock
129
4
On vehicles without Distronic* the symbol lights up briefly but has no function.
5 Only on vehicles with tyre pressure monitor*.
6 Vehicles for the United Kingdom: the outside temperature is always displayed in the digital speedometer. At a glance
* optional
164_AKB; 5; 5, en-GB
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Page 117 of 381

Instrument cluster
114 Activating the multi-function display
X Switch on the ignition. 1
To dim the instrument cluster lighting
2 Reset button
3 To brighten the instrument cluster lighting
The multi-function display is also activated
when you:
R switch on the lights
R press reset button 2
R open a front door Adjusting the instrument cluster
lighting
X Brighter: press and hold down button 3.
X Dimmer: press and hold down button 1. Resetting the trip meter
X Select the standard display menu
(Y page 120).
X Press and hold reset button 2until the trip
meter is reset. Clock
On vehicles with Audio 20, you can set the
time using the on-board computer
(Y page 129). Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Distronic* mode:
One or two segments around the stored
speed light up. Rev counter
The red band in the rev counter indicates the
engine's overrevving range. The fuel supply is
interrupted to protect the engine when the
red band is reached.
! Do not drive in the overrevving range.
Doing so will damage the engine. H
Environmental note
Avoid driving at high engine speeds, as this
increases your vehicle's consumption
unnecessarily and pollutes the environ-
ment through increased emissions. Cont
rols
* optional
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Page 249 of 381

Service
246
X
Open the socket cover.
X Insert the connector with lug 1into
groove 2on the socket and turn the con-
nector clockwise to the stop.
X Make the cover engage.
X If you are using an adapter cable, secure
the cable to the trailer with cable ties.
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering. Service
ASSYST PLUS service interval display
ASSYST PLUS, the service interval display,
tells you when the next service is due. When-
ever a service is due, the following message
appears in the multi-function display:
Service A due in .. days
Service A due in .. km
Service A due now The letter indicates how much time the work-
shop will require to carry out the service work.
The letters displayed range from
Afor a short
service duration to Hfor a long service dura-
tion.
The service interval display ASSYST PLUS
does not record any periods of time during
which the battery is disconnected. In order to
maintain the time-dependent service sched-
ule, you should call up the service due date
and make a note of it before disconnecting
the battery. The alternative is to subtract the battery disconnection periods from the
service date shown on the display. Fading out the service message
1
Reset button
X Press the 1reset button beside the instru-
ment cluster.
The service message goes out. Operation
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Page 341 of 381

Battery
338while it is still installed. Otherwise, the vehi-
cle's electronic system may be damaged.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
X Charge the battery. Observe the notes in
the operating instructions for your battery
charger.
X Refit the charged battery.
To do this, follow the steps described in
"Removing the battery" (Y page 337) in
reverse order.
i You can charge the battery using the
jump-start terminals. These are located on
the right when viewed in the direction of
travel.
X Open the bonnet (Y page 219). Jump-start terminals
1
Body earth point (negative terminal)
2 Positive terminal (under cover) Reconnecting the battery
! Always reconnect the battery in the
sequence described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
X Switch off all electrical consumers.
X Connect the positive terminal clamp and
secure the cover.
X Connect the negative terminal clamp.
X Connect the breather hose. Make sure that
a cell cap is fitted is fitted on the side. i
If the battery power supply has been inter-
rupted (e.g. if it has been reconnected), you
must carry out the following tasks:
R Set the time (Y page 130).
On vehicles with COMAND and a naviga-
tion system*, the clock is set automati-
cally
R Reset the sliding/tilting sun-
roof* (Y page 189).
R Reset the function for folding the exterior
mirrors in/out automatically* by folding
the mirrors out once ( Ypage 86).
R Reset the side windows (Y page 101)Practical advice
* optional
164_AKB; 5; 5, en-GB
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