When you switch on the ignition, some of the warning and indicator lamps light up briefly to show that the associated systems are working properly. These systems are marked with a 
in the following tables. If one of these warning/indicator lamps does not light up, there is a fault in the associated system.
in the following tables. If one of these warning/indicator lamps does not light up, there is a fault in the associated system.Red warning lamps | |
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 | Electro-mechanical parking brake link► |
 | Cooling system link► |
 | Engine oil pressure link► |
 | Alternator link► |
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 | Steering lock link► |
 | Engine stopped while vehicle is moving link► |
 | Gearbox link► |
 | Bonnet link► |
 | Adaptive cruise control* link► |
Emergency assist* link► | |
 | AdBlue* link► |
 | AdBlue* link► |
 | e-tron: System warning* link► |
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 | e-tron: Charging system* link► |
Yellow indicator lamps | |
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     | Electronic stabilisation control (ESC) link► |
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 | Brake pads link► |
 | Electro-mechanical parking brake link► |
 | Hill hold assist link► |
 | Tyre pressure* link► |
   | Tyre pressure* link► |
 | Engine management* link► |
| Engine management* link► |
 | Engine management* link► |
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 | Diesel particulate filter* link► |
 | Engine speed governing* link► |
 | Engine oil level (MIN) link► |
Engine oil sensor link► | |
 | Engine warm-up requested* link► |
 | Battery charge link► |
 | Fuel tank system link► |
 | Washer fluid level link► |
 | Windscreen wipers link► |
 | Remote control key* link► |
 | Driver s door* link► |
 | Battery in remote control key link► |
 | Bulb monitor* link► |
 | Headlight range control link► |
 | Adaptive light* link► |
 | Light sensor/rain sensor* link► |
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 | Steering lock link► |
 | Engine start system link► |
 | Electro-mechanical power steering link► |
 | Suspension control* link► |
 | Towing bracket* link► |
Soft top* link► | |
 | Active lane assist* link► |
 | Side assist* link► |
 | Pre sense* link► |
 | AdBlue* link► |
 | AdBlue* link► |
| e-tron: System warning* link► |
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 | e-tron: Charging system* link► |
Further indicator lamps | |
 | Turn signals link► |
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 | Trailer turn signals* link► |
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 | Cruise control system* link► |
 | Adaptive cruise control* link► |
 | Adaptive cruise control* link► |
 | Adaptive cruise control* link► |
 | Adaptive cruise control* link► |
 | Active lane assist* link► |
 | Hold assist* link► |
 | Start/stop system* link► |
 | Start/stop system* link► |
 | Convenience key* link► |
 | Engine start system link► |
 | Gearbox link► |
 | Electro-mechanical parking brake link► |
 | Electro-mechanical parking brake link► |
 | Hold assist* link► |
 | Hill hold assist link► |
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 | Child lock (electric)* link► |
 | Auxiliary heating / ventilation* link► |
 | AdBlue* link► |
 | Rest recommendation* link► |
 | Speed warning function* link► |
 | Cruise control system* link► |
 | Park assist* link► |
 | Park assist* link► |
 | Adaptive cruise control* link► |
 | Adaptive cruise control* link► |
 | Active lane assist* link► |
 | Side assist* link► |
 | Pre sense* link► |
 | Camera-based traffic sign recognition* link► |
 | Main beam assist* link► |
 | Main beam assist* link► |
 | Main beam headlights link► |
 | e-tron: Electric drive system activation* link► |
 | e-tron: Electric drive system activation* link► |
 | e-tron: Charging system* link► |
 | e-tron: Charging system* link► |
 | e-tron: Combustion engine* link► |
 | e-tron: Fuel tank system* link► |
 | e-tron: Charging system* link► |
 | g-tron: Natural gas mode* link► |