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
89
guides to help you prepare for a conversation with a workshop.
Understand first
Learn the possible cause of a symptom
Then decide
Know what to ask during your visit
Choose a location
Book a workshop at the location you prefer
Latest guides
Learn about the possible causes first. Choose a location once you are ready to book a visit.
A drop in oil level can come from external leaks, oil burning inside the engine, problems with the crankcase ventilation (PCV) system or the turbo. We explain how to assess the scale of the problem and when to go to a workshop.
An unstable fuel gauge usually means a measurement or electrical connection fault. We explain common causes, what you can safely check and how professional diagnostics are carried out.
Steering-wheel vibration or a pulsing brake pedal have several common causes. This text explains the symptoms, possible fault sources and how professional diagnostics are carried out.
Limp mode limits engine power to protect components. Learn the typical symptoms, possible cause groups, when to stop driving and how professional diagnostics proceed.
A brake pad wear warning light or a 'service brakes' message usually does not indicate an immediate failure, but signals that the braking system is approaching a service threshold. In practice it is most often worn pads, sometimes a wear sensor, and in some cars a different issue with fluid level, hoses or the warning electronics.
If the handbrake won't hold, sticks or the EPB warning light is on, don't assume a single fault. On cars with an electric parking brake the issue can be the switch, power supply or control unit, or calipers, actuators at the wheels, or the mechanical condition of the brakes.
If the brake pedal has become soft, has a longer travel, or requires noticeably more force than usual, don’t assume a single fault straight away. The symptom can be related to vacuum assistance, but also to air in the hydraulic system, a brake fluid leak, a faulty brake servo (booster) or a vacuum pump.
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 yellow ABS, ESP or ASR warning light is on, it usually means reduced operation of the systems that assist braking and stabilising the vehicle's course. You can often drive carefully to a workshop, but keep speed down and increase following distance.
It's an autumn evening. The tarmac is wet after rain and visibility is limited. A deer runs onto the road. You instinctively stamp the brake pedal to the floor.
Most drivers change oil on schedule and remember seasonal tyre changes and inspections. Unfortunately, brake pads—directly affecting safety—are checked far less often.
You approach a junction. You press the brake pedal gently and suddenly hear a characteristic, high-pitched squeal. For a moment you wonder whether it's your car or the vehicle next to you.
Need help?
Choose a workshop and describe the symptoms in the booking form.
