Control lamps of a combination of devices
Warning lamps indicate the status of certain functions/faults.
Note. A number of functions are monitored by a fault monitoring system. Functional disturbances are shown in the instrument cluster display as red symbols (priority 1 - danger) or yellow symbols (priority 2 - warning).
EPC engine management
Cars with a gasoline engine
The indicator lamp monitors the petrol engine management system.
EPC control lamp (Electronic Power Control) lights up to check the function of the system when the ignition is switched on.
Note. If the warning lamp comes on while driving, it indicates a malfunction in the engine management system. Immediately contact a specialized company to check the engine.
Preheat system
Diesel vehicles
The warning lamp lights up during engine preheating.
The ignition of the control lamp -gg* indicates that the engine is preheating. Start the engine as soon as the lamp goes out. When starting a warm engine, as well as at an outside temperature above +8°C, the control lamp lights up only for about 1 s.
Note
- The ignition of the preheating system warning lamp while driving indicates a malfunction in the engine management system. Have the engine checked immediately.
- The reason that the control lamp does not light up at all when the ignition is turned on may be a malfunction in the preheating system. Check engine.
Direction indicators on a trailer
When driving with a trailer, the indicator lamp flashes together with the direction indicators on.
The indicator lamp flashes when the direction indicators are switched on, if the trailer is correctly connected to the vehicle.
In the event of a malfunction of the direction indicator lamp on the vehicle itself or on the trailer, the control lamp does not flash.
Parking light / headlights
The indicator lamp illuminates when the parking lights or headlights are on.
Ride height control
Vehicles with ride height control
The warning lamp lights up when the device corrects the height of the rear of the vehicle.
The control lamp lights up for a few seconds to check the function after the ignition is switched on.
The flashing of the warning lamp after monitoring the function indicates that the rear of the vehicle has dropped below a certain level after a long period of inactivity. This is fine. The indicator lamp goes out after the ride height adjustment process is completed.
The constant burning of the control lamp signals a malfunction of the ride height control device or means an extreme inclination of the vehicle relative to the rear axle. If the device malfunctions, the vehicle's ground clearance is reduced and driving comfort is reduced. Repair the fault at Audi immediately.
Carefully. Do not start driving when the lamp is flashing, as otherwise low-lying vehicle components may come into contact with road surface irregularities, which may cause damage to these components.
Electronic stability control (ESP)
The indicator lamp monitors the function of the electronic stability control system.
Pilot lamp functions:
- The lamp flashes while driving when the ESP device is operating.
- The lamp comes on to check the function when the ignition is switched on and should go out after about 2 s.
- The lamp is on when the ESP is malfunctioning.
- The lamp is on when the ESP device is turned off
- The lamp is also on when the ABS fails, since the ESP device works together with the ABS.
If the warning lamp comes on immediately after starting the engine, a system-controlled ESP shutdown may occur. In this case, you can turn on the ESP by turning the ignition off and then on. The lamp goes out and the device is completely ready for operation.
Electronic anti-theft lock
Warning lamp, signals the exchange of data between the car and the original ignition key.
When the ignition is switched on, the vehicle key data is automatically requested. A positive result of the data exchange is confirmed by a short ignition of the control lamp
When using a non-original key, the control lamp starts flashing for a long time. In this case, the vehicle cannot be operated.
High beam
The indicator lamp lights up when the high beam is on.
The control lamp lights up at inclusion of a high beam or at use of an intermittent light signal.
Direction indicators
The indicator lamp flashes together with the turn indicators on.
The left or right indicator lamp flashes depending on which direction indicators are on. When the hazard warning light is on, both direction indicator lamps flash simultaneously. If one of the direction indicators fails, the control lamp flashes twice as often.
The above does not apply to driving with a trailer. If any of the direction indicator lamps on the vehicle itself or on the trailer fails, the indicator lamp does not flash.
Engine electronics
The control lamp indicates a malfunction of the engine electronics. Contact Audi as soon as possible and rectify the cause of the fault.
Airbag system
The indicator lamp monitors the operation of the airbag system and the belt tensioners.
The control lamp lights up for a few seconds when the ignition is switched on.
The system is malfunctioning if the control lamp does not go out after the ignition is turned on or lights up, flashes / flickers while driving, and also does not light up when the ignition is turned on.
Attention. In the event of a system malfunction, have it checked by a specialist company without delay. Otherwise, there is a risk that in the event of an accident, the system of airbags or seat belt tensioners will not operate normally.
Anti-lock brake system (ABS)
The indicator lamp monitors the operation of the ABS and the electronic differential lock (EDS).
The control lamp lights up for a few seconds when the ignition is switched on / while the engine is started and should go out after the end of the automatic control process.
The ABS device is faulty if:
- The control lamp does not light up when the ignition is switched on.
- The control lamp does not go out after a few seconds.
- The control lamp lights up while driving.
In this case, the vehicle can only be braked using the conventional braking system, i.e. without ABS. Contact Audi as soon as possible.
In the event of an ABS malfunction, the ESP warning lamp also lights up.
Malfunction of the entire brake system
If the ABS warning light comes on together with the brake warning light (y, then in this case there is a failure not only of the ABS control function, but also a malfunction of the brake system.
In the event of a malfunction of the brake system, a symbol appears in the display of the instrument cluster.
Malfunction of the device of electronic blocking of differential (EDS)
The EDS device works in conjunction with the ABS. The failure of the EDS device is signaled by the ignition of the ABS warning lamp. Contact Audi as soon as possible.
Attention
- When the brake system warning lamp f lights up together with the ABS warning lamp, stop immediately and check the brake fluid level in the filling tank. When the brake fluid level drops below the mark "MIN" further movement is not permitted - risk of accident! Get qualified help.
- If the brake fluid level is normal, the cause may be a malfunction of the ABS. With the failure of the control function of the ABS during braking, the rear wheels can lock up relatively quickly. Under certain circumstances, this can cause the rear axle of the vehicle to skid - risk of skidding! Drive carefully to the nearest specialist workshop and rectify the fault.
Parking brake
The warning lamp lights up when the parking brake is applied.
The control lamp lights up at the tightened parking brake and the included ignition. It should go out after the parking brake is released.
Battery discharge
The warning lamp indicates a defect in the alternator or a malfunction in the vehicle's electrical equipment.
The control lamp lights up when the ignition is switched on and should go out after the engine is started.
If the lamp comes on while the vehicle is moving, it is usually still possible to drive to the nearest Audi company. Since, however, a continuous discharge of the battery occurs, all but the most necessary current consumers should be switched off. In addition, the voltage of the on-board network can be monitored using a voltmeter.
Carefully! Lighting up in the instrument cluster while driving an additional signal symbol (cooling system malfunction) indicates a malfunction of the water pump of the cooling system - risk of engine damage! Stop immediately and turn off the engine.
Reminder to buckle up
The indicator light reminds you to fasten your seat belt.
The warning lamp comes on for a few seconds after the ignition is switched on to remind you to fasten your seat belts.
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