eCarService · Driver Academy
Learn what a warning light or worrying symptom may mean, what you can check safely and when you should stop driving.
Knowledge base
83
guides to help you prepare for a conversation with a workshop.
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Latest guides
Learn about the possible causes first. Choose a location once you are ready to book a visit.
Has the steering suddenly become heavy and a power assist warning or EPS message lit on the dash? Don’t ignore it — causes range from a temporary voltage drop or charging issue to a fault in the assist unit or steering sensors.
If your diesel cranks longer in the morning, starts unevenly or emits white smoke after start, don't assume a single fault. This combination of symptoms can point to a weak battery, worn glow plugs, fuel supply issues, an intake leak or an engine control fault.
The AIRMATIC warning, sagging after parking or uneven ride height don't always indicate the same fault. We explain when you can cautiously drive to a workshop and when quick diagnostics of the air suspension are needed.
If the check engine light is on and the car starts to run unevenly at idle, vibrate or sometimes jerk on light throttle, don't assume a single fault. This set of symptoms often fits an EGR issue, a dirty intake, air sensors or a leak in the engine control system…
If a diesel loses coolant and there is a sweet smell, exhaust odour or light white smoke, don't assume a single fault. Those symptoms can fit a leaking EGR cooler, but other cooling, intake or exhaust parts may behave similarly.
If the brake pedal suddenly becomes stiffer and you hear hissing when pressing it, don’t assume a single cause. This combination of symptoms often points to a problem with vacuum-assisted braking, but the source can also be a hose, check valve, vacuum pump or the booster itself.
If the tyre pressure warning light is flashing or stays on, don't assume a single cause. In many cars a steady light simply means too-low pressure in at least one tyre, but flashing for about a minute and then staying on usually indicates a fault in the TPMS or its sensors.
An AdBlue message, engine warning light and a restricted start notice are warnings not to ignore. The car may still run, but usually only for a limited time and without any guarantee it will restart after being switched off.
If a DSG or S-tronic jerks on take-off, delays engagement of D or R, drags gears, vibrates during manoeuvres or you don't know when the oil was last changed, don't assume a single fault. The same symptom in Audi, Volkswagen, Skoda, Seat or Cupra can have several causes: from oil service to clutches, mechatronics or engine and drive mounts.
If a DSG or S-tronic jerks on take-off, delays shifts, vibrates when manoeuvring or shows a gearbox warning, don’t assume a single cause. In VAG cars the same symptom can come from oil, clutches, mechatronics, mounts, adaptations or even uneven engine running.
After replacing the front windscreen ADAS calibration may be needed even if no warning light is shown on the dash. The camera behind the rear‑view mirror works through the glass, so its position, mount, field of view and the glass meeting the vehicle's requirements all matter. It's safest not to guess, but to check…
If the automatic transmission jerks when moving, during slow manoeuvring or after shifting from P to D or R, don't assume a single cause. A light single jerk can result from operating conditions, but repeated knocks, slip, a transmission warning, limp mode, a fluid leak or an overheat message require diagnostics.
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