Instruments and Indicator/Warning Lights23
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
WARNING
If there is a fault in the cornering lights, the headlights are automatically lowered to the emergency position. Thus the illuminated length of the road is shortened. Drive carefully and have the car inspected immediately by a specialist garage.
Electrohydraulic power steering
The warning light comes on for a few seconds when the ignition is switched on.
If the warning light after switching on the ignition or when driving lights up contin-uously, a fault exists in the electrohydraulic power steering.
•If the yellow warning light lights up, this indicates a partial or total failure of the power steering and the steering forces can be greater.
Further information ⇒page 156.
WARNING
Contact your specialist garage if the power steering is defective.
Note
•If the yellow warning light goes out after starting the engine again and a short drive, it is not necessary to visit a specialist garage.
•If the battery has been disconnected and reconnected, the yellow warning light comes on after switching on the ignition. The warning light must go out after driving a short distance.
•There is no power-assisted steering support when the vehicle is being towed without the engine running or when the power-assisted steering is defect. The vehicle is fully steerable however. There is simply increased force required to turn the steering wheel.
EPC fault light (petrol engine)
The (Electronic Power Control) warning light comes on for a few seconds when the ignition is switched on.
There is a system fault in the engine control system if the warning light does not go out or comes on or flashes while driving. The engine management system selects an emergency programme which enables you to drive to the nearest specialist garage by adopting a gentle style of driving.
The following text will be displayed in the information display*:
ENGINE FAULT WORKSHOP!
Glow plug system (diesel engine)
The warning light lights up for a cold engine when switching on the ignition (pre-heat position) 2 ⇒page 95. Start the engine after the indicator light goes out.
The glow plug indicator light will come on for about 1 second if the engine is at a normal operating temperature or if the outside temperature is above +5°C. This means that you can start the engine right away.
There is a fault in the glow plug system if the indicator light does not come on at all or lights up continuously. Contact a specialist garage as soon as possible to obtain professional assistance.
There is a system fault in the engine control system if the warning light has started to flash while driving. The engine management system selects an emer-gency programme which enables you to drive to the nearest specialist garage by adopting a gentle style of driving.
The following text will be displayed in the information display*:
ENGINE FAULT WORKSHOP!
Turn signal system for vehicles towing a trailer*
The indicator light on vehicles towing a trailer flashes together with the respec-tive indicator light for the turn signal system.
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Automatic gearbox106
Shifting down gears
– One-touch back of the selector lever (in the Tiptronic position) .
It is possible to switch over to manual both when the car is stationary and also when driving.
When you accelerate, the gearbox shifts up automatically in gears 1, 2, 3, 4 and 5 into the next higher gear just before the maximum permissible engine speed is reached.
If you select a lower gear, the automatic gearbox does not shift down until there is no risk of the engine overrevving.
If you operate the kickdown function, the gearbox shifts into a lower gear in line with the vehicle speed and engine speed.
Emergency programme
An emergency programme exists in the event of a fault in the system.
The gearbox operates in a corresponding emergency programme if there are func-tional faults in the gearbox electronics. This is indicated by all of the segments in the display lighting up or going out.
It is possible to continue to move the selector lever into all the positions. In the positions D and S the gearbox remains engaged in the 3rd gear. It is also possible to continue to engage reverse gear in the position R.
The manual shift programme (Tiptronic) is switched off in the emergency mode.
If the gearbox has switched over to emergency mode, drive to the nearest specialist garage in order to have the fault rectified.
Tow-starting and towing vehicle
Tow-starting a vehicle
It is not possible to tow-start or push-start vehicles fitted with automatic gearbox.
you can use jump-start cables connected to the battery of another vehicle for starting your car if the vehicle battery is flat ⇒page 208.
Towing a vehicle
Please pay attention to the following information if it comes necessary to tow-in your car ⇒page 209.A-
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Intelligent Technology157
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
•the wheels of an axle are loaded heavily (e.g. when towing a trailer or when driving uphill or downhill),
•the vehicle is operated in unfavourable winter conditions or on an unfirm ground,
•snow chains or emergency wheel are mounted,
•the driver has a sporty style of driving (with sharp acceleration and high speed when cornering).
Basic setting of tyre inflation pressure-control system
After changing the tyre inflation pressures or after changing one or several wheels, a basic setting of the system must be carried out as follows.
•Inflate all tyres to the specified inflation pressure ⇒page 194.
•Switch on the ignition.
•Press button ⇒page 156, fig. 160 for more than 2 seconds. While pressing the button, the warning light lights up. At the same time the basic values are stored, which is confirmed with an acoustic sound and then the warning light goes out.
•If the warning light does not go out after the basic setting, there is a fault in the system. Have the vehicle inspected by your nearest specialist garage.
Function description
After the basic setting of the system the “adaptation” of the tyre inflation pressures and then the tyre pressure control in the individual tyres are performed.
Warning light lights up
If the tyre inflation pressure of at least one wheel is insufficiently inflated in compar-ison to the stored basic value, the warning light ⇒ lights up. Inflate all tyres to the specified inflation pressure ⇒page 194, “Tyre life” and then perform a basic setting of the system.
WARNING
•When the warning light lights up, immediately reduce the speed and avoid sudden steering and brake manoeuvres. Please stop the vehicle
without delay at the nearest possible stop and inspect the tyres and their inflation pressures.
•The driver is responsible for the correct tyre inflation pressures. For this reason, the tyre inflation pressures must be checked regularly.
•Under certain circumstances (e.g. sporty style of driving, wintry or unpaved roads) the warning light can be delayed or does not light up at all.
•The tyre inflation pressure-control system does not take away the responsability from the driver for the correct tyre inflation pressure.
Note
The tyre inflation pressure-control system:
•does not replace the regular tyre inflation pressure control, because the system cannot detect an even pressure loss,
•cannot warn in case of very rapid tyre inflation pressure loss, e.g. in case of sudden tyre damage. In this case carefully bring the vehicle to a standstill without sudden steering movements and without sharp braking.
WARNING (continued)
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