Cockpit79
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
•
The wheel on one axle is changed.
Tyre pressure adjustment
Following the modification to tyre pressure or after changing one or more
wheels, the button ⇒page 78, fig. 49 must be kept pressed while the igni-
tion is on until an acoustic signal is heard and the warning lamp goes out.
If the wheels are under excessive load (for example, driving with a trailer or
heavy load), the tire pressure must be increased to the recommended value
for a full load (see the sticker on the inside of the fuel flap). If the tyre monitor
system button is pressed down, the new tyre pressures are confirmed.
The tyre pressure monitor indicator
lights up
If the tyre pressure of one or more wheels is much lower than the value set by
the driver, then the tyre co ntrol warning lamp lights up ⇒.
The tyre pressure monitor indicator flashes
If the tyre pressure indicator flashes, this indicates a fault. Go to the nearest
specialist workshop.
WARNING
•
When the tyre pressure indicator l ights, reduce speed immediately and
avoid any sudden manoeuvre or braking. Stop when possible, and check
the tyre pressure and status.
•
The driver is responsible for correct tyre pressure. For this reason, tyre
pressure must be regularly checked.
•
Under certain circumstances (for exam ple, in a sports situation, in
winter conditions or on a dirt track) the tyre monitor indicator may light or
function incorrectly.Note
If the battery is disconne cted, the yellow indicator
lights up after turning
the ignition on. This should turn off after a brief journey.
Bulb defect
The warning lamp lights up when a bulb in the vehicle's exte-
rior lighting is defective.The warning lamp
lights up when a bulb in the vehicle's exterior lighting
(e.g. left-hand main beam) is defective.
The instrument panel disp lays the following message
13): LEFT FULL BEAM
FAULTY .
Brake system* / handbrake
The warning lamp lights up if the handbrake is applied, if the
brake fluid level falls too low or if there is a fault in the brake
system.
This warning lamp
lights up if
•
If the handbrake is on.
If you drive faster than 6 km/h with the handbrake on, the following message
will appear on the instrument panel display
14): HANDBRAKE ON. Also, an
audible warning is given.
•
If the brake fluid level is too low ⇒page 226.
The instrument panel disp lays the following message
14): STOP BRAKE FLUID
INSTRUCTION MANUAL .
•
If there is a fault in the brake system.
The instrument panel disp lays the following message
14): BRAKE SYSTEM
FAULT INSTRUCTIONS MANUAL .
13)Depending on the version of the model.14)Depending on the version of the model.
AlteaXL_EN.book Seite 79 Montag, 2. Februar 2009 12:26 12
Intelligent technology
184essential that you adjust your speed to suit the road and traffic conditions.
Do not let the extra safety features tempt you into taking any risks when
driving.Anti-lock brake system and traction control
M-ABS (ABS and TCS)Anti-lock brake system (ABS)
The anti-lock brake system prevents the wheels locking
during braking.The anti-lock brake system (ABS) is an important part of the vehicle's active
safety system.
How the ABS works
If one of the wheels is turns too slowly in relation to the road speed, and is
close to locking, the system will reduce the braking pressure for this wheel.
The driver is made aware of this control process by a pulsating of the brake
pedal and audible noise. This is a deliberate warning to the driver that one or
more of the wheels is tending to lock and the ABS control function has inter-
vened. In this situation it is important to keep the brake pedal fully depressed
so the ABS can regulate the brake application. Do not “pump”.
If you brake hard on a slippery road surface, the best possible control is
retained as the wheels do not lock.
However, ABS will not necessarily guarantee shorter braking distances in all
conditions. The braking distance could even be longer if you brake on gravel
or on fresh snow covering a slippery surface.
WARNING
•
The anti-lock brake system cannot defy the laws of physics. Slippery
and wet roads are dangerous even with ABS! If you notice that the ABS is
working (to counteract locked wheels under braking), you should reduce
speed immediately to suit the road and traffic conditions. Do not let the
extra safety features tempt you into taking any risks when driving.
•
The effectiveness of ABS is also determined by the tyres fitted
⇒ page 230.
•
If the running gear or brakes are mo dified, the effectiveness of the ABS
could be severely limited.
Traction control system (TCS)*
The traction control system prevents the drive wheels from
spinning when the car is accelerating.Description and operation of the traction control system during acceleration
(TCS)
TCS reduces engine power to help prevent the drive wheels of front-wheel
drive vehicles losing traction during acceleration. The system works in the
entire speed range in conjunction with ABS. If a malfunction should occur in
the ABS, the TCS will also be out of action.
TCS helps the vehicle to start moving, accelerate and climb a gradient in slip-
pery conditions where this may otherwise be difficult or even impossible.
The TCS is switched on automatically when the engine is started. If necessary,
it may be turned on or off pushing the button on the centre console.
When the TCS is off, the warning lamp is lit. The TCS should normally be left
switched on at all times. Only in exceptional circumstances, when slipping of
the wheels is required, should it be disconnected for example
WARNING (continued)
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