What Causes the Malfunction Indicator Light to Illuminate in a New Car?

1 Answers
RubyFitz
07/25/25 12:13pm
New car malfunction indicator light illumination can be attributed to the following reasons. 1. When the ignition switch is turned on, dashboard indicator lights will illuminate as part of the vehicle's self-diagnosis system and should automatically turn off after a period. 2. Engine malfunction light indicates poor combustion condition, engine knocking, substandard fuel quality, or excessive engine carbon buildup. 3. Battery warning light signals battery depletion/failure or power system malfunction. 4. Oil warning light indicates insufficient oil level, excessive engine temperature, improper oil selection, or blocked oil passages. 5. Tire pressure warning light suggests tire puncture/leakage or damaged tire pressure sensor. 6. Brake system warning light indicates engaged parking brake, ABS failure, non-compliant brake fluid, or brake system abnormality. 7. Coolant temperature warning light shows excessive engine temperature, insufficient coolant, thermostat failure, or damaged coolant temperature sensor.
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