How Long Can You Drive with the Mercedes Engine Yellow Light On?

1 Answers
IsabellaDella
07/30/25 12:59am
This commonly referred to yellow engine warning light is also known as the fuel injection system malfunction indicator. As long as there are no noticeable abnormalities in engine power and sound, you can continue driving. This is because the ECU (Engine Control Unit) has a fault substitution program. Specific details are as follows: 1. Engine Fault Signal: The engine fault signal is issued by the ECU, which controls all electronic components of the engine, including the electronic throttle, fuel injectors, alternator, fuel pump, etc., covering systems such as intake, exhaust, fuel, ignition, and timing. If the engine warning light is on, it is essential to have it checked at a nearby repair shop. 2. Coolant Temperature Gauge: First, check the coolant temperature gauge and oil pressure warning light. If these indicators are not showing any warnings, the vehicle can still be driven. However, it is crucial to control the speed and promptly drive to a service station for inspection.
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