Checking the coolant levelFig. 121
Coolant expansion reservoir
Read and observe and on page 142 first.
The coolant expansion bottle is located in the engine compartment.
Coolant expansion reservoir » Fig. 121
Mark for the maximum permissible coolant level
Mark for the lowest permissible coolant level
The coolant level should be kept between the marks
A
and
B
.
The coolant can be checked and topped up, if the following conditions are sat-
isfied.
The vehicle is standing on a horizontal surface.
The engine is turned off.
The engine is not heated.
The bonnet is open.
Checking the level
›
Check the coolant level in the coolant expansion tank » Fig. 121.
If the engine is warm, the test result may be inaccurate. The level can also be
above the mark
A
» Fig. 121 .
In case of low coolant level, the warning light illuminates in the instrument
cluster as well as the relevant notification » page 36 in the instrument cluster.
We still recommend inspecting the coolant level directly at the reservoir from
time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the cooling sys-
tem. Do not merely top up the coolant. Have the cooling system checked by a
specialist garage.
ABReplenishing
Read and observe
and on page 142 first.
The coolant expansion tank must always contain a small amount of cool-
ant » page 142, in section Introduction .
›
Place a cloth over the cap of the coolant expansion tank and unscrew the
cap carefully .
›
Replenish the coolant.
›
Turn the cap until it clicks into place.
CAUTION
■
Only top up with new coolant.■Do not use an alternative additive if the specified coolant is not available. In
this case, use just water and have the correct mixing ratio of water and cool-
ant additive restored by a specialist garage as soon as possible.
Brake fluid
Introduction
This chapter contains information on the following subjects:
Checking the brake fluid level
144
Specification
144
The brake fluid reservoir is located in the engine compartment » Fig. 122 on
page 144 .
WARNING■
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 137.■
Do not use used brake fluid - the function of the brake system may be im-
paired – risk of accident!
CAUTION
■ Do not continue your journey if the fluid level has dropped below the “MIN”
marking » Fig. 122 on page 144 , do not continue driving - there is a risk of
an accident! Seek help from a specialist garage.■
Brake fluid damages the paintwork of the vehicle.
143Inspecting and replenishing
Assignment of the fuses in the dash panelFig. 150
Schematic representation of the fuse box for vehicles with left-
hand steering/right-hand steering
Read and observe
and on page 169 first.
No.Power consumer1S-contact2START - STOP3Instrument cluster, headlight range adjustment, telephone, oil level
sensor, diagnostic port, dimmable interior rear-view mirror4Control unit for ABS/ESC, steering angle sensor strip with switches5Petrol engine: Speed regulating system6Reversing light (manual gearbox)7Ignition, engine control unit, automatic gearbox8Brake pedal switch, clutch switch, engine cooling fan9Operating controls for the heating, electronic control unit for air con-
ditioning system, park distance control, window lift, engine cooling
fan, heated washer nozzles10DC-DC converter11Mirror adjustment12Control unit for trailer detection13Electronic control unit for automatic gearbox, selector lever of the
automatic gearbox14Headlight range control15Not assignedNo.Power consumer16Power steering, speed sensor, engine control unit, control unit for
fuel pump17Daytime running lights/radio for vehicles with START-STOP18Mirror heater19Ignition lock input20Engine control unit, electronic control unit for fuel pump, fuel pump21Reversing lamp (automatic gearbox), fog lights with the function
CORNER
22
Operating controls for the heating, electronic control unit for air con-
ditioning system, telephone, instrument cluster, steering angle
sender, multi-function steering wheel, ignition key removal lock, di-
agnostic port, rain sensor23Interior lighting, storage compartment and luggage compartment,
side lights24Central control unit25Light switch26Rear window wiper27Operating lever underneath the steering wheel28Petrol engine: Purge valve, PTC heater29Injection, coolant pump30Fuel pump, ignition system, cruise control31Lambda probe32High-pressure fuel pump, control valve for fuel pressure33Engine control unit34Engine control unit, vacuum pump35Switch illumination, number plate light, parking light36High beam, light switch37Rear fog light, DC-DC converter38Fog lights39Air blower for heating40Not assigned41Heated front seats42Rear window heater 170Do-it-yourself
