Whine at steady speed - gearbox or differential?
A constant hum or whine at a steady speed often comes from drivetrain components. How to recognise the source, when to stop driving and what the workshop will check?
eCarService · Driver Academy
Car care guides for drivers
Learn what a warning light or worrying symptom may mean, what you can check safely and when you should stop driving.
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Knowledge that helps you understand your car
Learn about the possible causes first. Choose a location once you are ready to book a visit.
Computer diagnostics7 min
Symptoms after ECU software update - what to check
After an ECU update new error codes, loss of functions or communication issues can appear. This article explains typical symptoms, possible causes, what to check before a garage visit and how professional diagnostics proceed.
AEB and adaptive cruise acting up - is it a sensor problem?
False braking, failure to detect vehicles or intermittent ACC often relate to the camera, radar or ADAS module calibration. What to check yourself and how professional diagnostics look.
Noise and vibrations from the rear axle when turning
A metallic knock, humming or vibrations from the rear axle when turning can have various causes - from wheel bearings to internal differential damage. We explain the symptoms, when to stop driving and how professional diagnostics work.
Clunks and grinding when changing gears - what to check
Clunks and metallic grinding when changing gears can have many causes - from gearshift mechanism adjustment to worn synchronisers or clutch problems. What to check and when to go to a workshop.
Computer diagnostics7 min
Car in limp mode — what to check
Limp mode limits engine power to protect components. Learn the typical symptoms, possible cause groups, when to stop driving and how professional diagnostics proceed.
DSG/S-tronic in VAG: jerking, vibrations and no oil history
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.
DSG in Audi, Volkswagen, Skoda and Seat — failure symptoms and oil change
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.
Automatic transmission jerks when moving
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.
Clutch slipping: can you drive?
If engine revs rise while the car accelerates poorly, it usually means a slipping clutch or a problem transferring drive. A short, calm trip to a workshop may be possible, but further driving under load can quickly worsen the fault and increase the repair scope.
Transmission oil service: when it makes sense
If you wonder whether it’s already time for a transmission oil service and whether you can still drive, the answer is: first you must establish if the symptoms fit an oil problem or rather a hydraulic/electrical fault. Delayed shifts, jerking and “different” behaviour can occur, but just as often the cause is control and sensors…
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