Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Emissions Maintenance Reminder Reset Procedure
1999 Chrysler LHSSECTION Emissions Maintenance Reminder Reset Procedure
- On some models, an EGR or MAINTENANCE REQUIRED warning light in dash will come on as a reminder to have EGR system serviced (each 50, 000 miles), oxygen sensor replaced (each 80, 000 miles), or evaporative carbon canister replaced (100, 000 miles).
- After servicing or replacing components, reset mileage counter. Reset switch is located on back of instrument cluster. See Fig 1, Fig 2 and Fig 3 . Slide switch to opposite side to reset indicator light.
- Remove light bulb after 120, 000 mile service on Ram-50.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.