
Warning lights
Introduction
This chapter contains information on the following subjects:
Handbrake
34
Braking system
34
Seat belt warning light
34
Alternator
35
Engine oil pressure too low
35
Coolant
35
Automated transmission
35
Power steering
36
Stability Control (ESC) / traction control (ASR)
36
Antilock brake system (ABS)
36
Tyre pressure
36
Rear fog light
37
Exhaust inspection system
37
Checking the engine electronics
37
Airbag system
37
Handbrake - automatic transmission
38
Brake pedal (automatic transmission)
38
Turn signal system
38
Cruise control system
38
Main beam
38
/
Rear seat belt warning light
38
City Safe Drive
38
/
START-STOP
38
The warning lights indicate certain functions or faults.
The lighting up of some warning lights may be accompanied by acoustic sig-
nals.
After switching on the ignition, some warning lights light up briefly as a func-
tion test.
If the tested systems are OK, the corresponding warning lights extinguishes
for a few seconds after switching on the ignition or after starting the engine.
WARNING■ Ignoring light-up indicator lamps in the instrument cluster and the control
symbols in the display may cause serious injury or damage to the vehicle.■
If you have to stop for technical reasons, then park the vehicle at a safe
distance from the traffic, switch off the engine and activate the hazard
warning light system » page 49. Place the warning triangle at the prescri-
bed distance.
■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 106, Engine compartment .
Handbrake
Read and observe
on page 34 first.
lights up - the hand brake is engaged.
An audible warning is also given if you drive the vehicle for at least 3 seconds
at a speed of more than 6 km/h.
Braking system
Read and observe
on page 34 first.
lights up - the brake fluid level in the brake system is too low or there is an
ABS fault.
›
Stop the vehicle, switch off the engine, and check the level of the brake fluid
» page 112 .
WARNING■
If the warning light illuminates together with the warning light
» page 36 , Antilock brake system (ABS) , stop driving! Seek help from
a specialist garage.■
A fault to the ABS system or the braking system can increase the vehi-
cle's braking distance – risk of accident!
Seat belt warning light
Read and observe
on page 34 first.
lights up - the driver or front passenger has not fastened their seat belt.
34Using the system

▶Remove any spark producing or incendiary items from the car and immedi-
ately switch off.
▶ Do not continue if the odour persists.
Seek help from a specialist garage to correct the gas system fault.
Regular gas system checks must be carried out in a specialist workshop on
natural gas-powered vehicles.WARNINGDo not underestimate the smell of gas in the car or when refuelling - it may
result in fire, explosion and injury.
Engine compartment
Introduction
This chapter contains information on the following subjects:
Opening and closing the bonnet
107
Engine compartment overview
108
Radiator fan
108
Windscreen washer system
108WARNINGInjuries or scolding or risks of accident or fire may occur when working in
the engine compartment. For this reason, it is essential to comply with the
warning instructions outlined below and with the general applicable safety
rules. The engine compartment of your car is a hazardous area!WARNINGInstructions before beginning work in the engine compartment■Turn off the engine and remove the ignition key.■
Firmly apply the handbrake.
■
For vehicles with manual transmission the lever into the neutral position.
■
For vehicles with automated manual transmission, shift the lever to posi-
tion N.
■
Allow the engine to cool.
■
Never open the bonnet if you can see steam or coolant escaping from the
engine compartment – risk of scalding! Wait until no more steam or coolant
is escaping.
WARNINGInformation for working in the engine compartment■Keep all people, especially children, away from the engine compartment.■
Never touch the radiator fan. The fan might suddenly start running!
■
Do not touch any hot engine parts – risk of burns!
WARNINGInformation for working in the engine compartment with the engine run-
ning■
Pay particular attention to moving engine parts, e.g. V-ribbed belt, gener-
ator, radiator fan - danger to life!
■
Never touch the electric wiring on the ignition system.
■
Avoid short circuits in the electrical system, particularly on the vehicle's
battery.
■
Always make sure that no jewellery, loose clothing or long hair can get
caught in rotating engine parts – risk to life! Always remove any jewellery,
tie back long hair and wear tight fitting clothing before completing any
work.
WARNINGInformation for working on the fuel system or the electrical system■Always disconnect the vehicle battery from the electrical system.■
Do not smoke.
■
Never work near open flames.
■
Always have a functioning fire extinguisher nearby.
WARNING■ Read and observe the information and warning instructions on the fluid
containers.■
Keep the working fluids in sealed original containers and safe from peo-
ple who are not completely independent, e.g. children.
■
Never spill operating fluids over the hot engine - risk of fire.
■
If you intend to work underneath the vehicle, you must secure the vehicle
from rolling away and support it with suitable supporting blocks; the car
jack is not sufficient – risk of injury!
CAUTION
Always top up using the correct specification of fluids. This may result in major
operating problems and also vehicle damage! 106General Maintenance

Index
A
abroad lead-free petrol
103
Abroad Headlights
50
ABS Operation
85
Warning light36
Acceptance and recycling of used vehicles95
Accessories92
Adjusting Exterior mirrors
53
head restraints54
Seat54
Steering wheel9
Adjusting the seats8
Air-conditioning system Air outlet vents
71
Airbag14
Deactivating17
Deactivating the front passenger airbag18
Deployment15
Front airbag15
Modifications and damage to the airbag system 94
Side airbag Head-Thorax
17
Warning light37
Airbag system14
air conditioning recirculation
70
Air conditioning69
Controls69
Air outlet vents71
Alcantara cleaning
101
Alternator Warning light
35
Anodized partsRefer to vehicle maintenance98
Anti-lock braking system (ABS)85
Anti-theft wheel bolts124
artificial leather101
Ashtray61
Assistance systems City Safe Drive
89
Parking aid86
Assistance Systems ESC
36
Assist systems85
ABS36
Cruise Control System88
Visual parking system87
Auto-computer see multi-function display
31
Automated transmission81
Lever control81
Warning light35
Automatic gearbox Tiptronic
82
Automatic load deactivation115
Automatic transmission Kick-down
82
Starting-off and driving82
Avoiding damage to your vehicle84
B
Bag hooks
65
Battery In the remote control key
132
Belts11
Belt tensioners13
Bonnet Closing
107
Opening107
Boot Class N1 vehicles67
See Boot lid43
Boot lid automatic locking
43
Closing43
Opening43
Brake Assist (HBA)86
Brake booster79
brake fluid specification
112
Brake fluid112
Checking112
Brake pedal - automatic transmission warning light
38
Brakes Brake booster
79
Brake fluid112
Braking and stabilisation systems85
Handbrake79
Running-in83
Warning lights34
Brakes and parking78
Brake system85
Braking Information on braking
78
Button in driver's door electric windows
44
C
Car care Jack
99
Care and maintenance92
Car park ticket holder58
Carrier Roof rack
67
Cavity protection99
Central locking39
problems42
147Index