| Check engine light stays on |
Emissions, ignition, air, fuel, sensor, circuit or mechanical
concerns
|
Schedule diagnosis soon. Do not purchase a part based only on a
trouble code.
|
| Check engine light flashes |
A severe misfire may be occurring |
Reduce driving and seek prompt professional guidance to limit
possible catalyst damage.
|
| Engine temperature warning or overheating |
Coolant loss, thermostat, fan, radiator, pump or engine concern
|
Stop safely, shut the engine off and never open a hot cooling
system.
|
| Knocking, ticking or abnormal engine noise |
Oil level or pressure, accessory, combustion, timing or
internal mechanical concern
|
Avoid continued driving if the sound is severe or accompanied
by a warning light or pressure loss.
|
| Harsh shifting, slipping or delayed engagement |
Fluid, electronic control, engine, mount or internal
transmission concern
|
Arrange testing before assuming a fluid service or replacement
will solve it.
|
| Grinding, pulling or brake pulsation |
Friction, hydraulic, rotor, caliper, tire or suspension concern
|
Schedule a brake inspection; major braking changes should not
be ignored.
|
| A/C blows warm or works intermittently |
Leak, compressor control, electrical, airflow or mechanical
concern
|
Request diagnosis instead of repeated refrigerant additions.
|
| Hybrid warning or reduced hybrid performance |
High-voltage, 12-volt, cooling, control or related system
concern
|
Record the message and call to confirm safe next steps and
service capability.
|