Cooling and air conditioning
Why does a vehicle overheat in traffic?
Overheating while stationary that improves in motion points towards checking heat rejection and airflow, but does not establish that the fan alone is faulty.
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Engine and maintenance
High RPM at idle: causes of a high idle speed
Elevated engine speed after a cold start differs from speed remaining high after operating temperature is reached.
Dashboard warning lights
Transmission light: the display message determines the next step
A transmission warning may appear as a gear symbol, AT or a temperature message. Read the full text; stopping and cooling instructions vary by transmission.
Dashboard warning lights
TPMS tyre-pressure light: check before resetting
TPMS illumination may mean low pressure, while flashing followed by steady illumination may indicate a monitoring fault. Measure pressure before clearing the warning.
Dashboard warning lights
Temperature light: read the warning before continuing
A red temperature warning or overheating message differs from a cold-engine indicator. Do not open the cooling-system cap while hot.
Dashboard warning lights
Oil light: distinguish pressure from level
A red oil-pressure warning with the engine running requires stopping and switching off the engine; a normal oil level does not establish normal pressure.
Dashboard warning lights
Dashboard-light guide: understand the symbol and choose your next step
Start with the symbol and message: a guide to ten key lights and the differences between fault warnings and operating indicators.
Dashboard warning lights
EPC light: understand the engine power-management warning
EPC appears in some Volkswagen Group vehicles and may accompany reduced response. It does not automatically mean the throttle body needs replacement.
Dashboard warning lights
Check Engine light: steady or flashing?
A steady engine light differs from a flashing one. Shaking, reduced power or an unusual smell increase the priority of stopping and inspection.
Dashboard warning lights
Brake light: parking brake or fault warning?
A red warning remaining after releasing the parking brake, or a change in pedal feel, requires stopping safely and seeking assistance.
Dashboard warning lights
Battery light while driving: inspect the charging system
The battery symbol with the engine running may indicate a charging fault; buying a new battery alone may not address the cause.
Dashboard warning lights
Airbag warning light: do not ignore the protection system
An SRS or airbag warning needs inspection without delay. The PASSENGER AIR BAG OFF indicator has a different meaning.