How to Reset the Service Light on My Vehicles

by Contributing Writer; Updated June 12, 2017

The Vehicles is equipped with sensors and computer hardware that monitor engine performance and cause a "Service Engine" light to illuminate on the Vehicles instrument panel when the sensors detect a failure in the emissions system. Another reason the light might illuminate is because the odometer has reached a preset mileage interval that coincides with the manufacturer's recommended routine services such as an oil change or a tuneup, regardless of how often you perform regular maintenance on the Vehicles. When you take your Vehicles to the dealer service department or to another qualified mechanic, after the mechanic performs the service, he will usually reset the light to turn it off. If the light is still on after the servicing or if you perform the service yourself, you will need to manually reset the light. Make sure you do it right after the Vehicles is serviced to ensure that the computer will keep proper track of the next service interval.

Under The Hood:

 How to Reset the Service Light on My BMW 325I

Sit in the car, close the door and buckle the seat belt.

Press the left dash button, and hold it. This is the button that resets the car's odometer.

Put the key in the ignition, and turn it one position. The dashboard lights should come on. Do not start the car.

Wait five seconds and release the button on the dashboard when you see the display "Sia".

Press the button and hold it again for five seconds.

Release the button when you see "Reset?" flash on the dashboard. Push it once more, but do not hold. Your service light is now reset.

 How to Reset the Service Light on a Jeep

Disconnect your battery cables from the battery posts with a 6-pt. closed wrench in the size appropriate for the battery bolts. Remove the negative (black) cable first. Leave the battery disconnected for several minutes, according to Reconnect, this time starting with the positive cable, and crank the engine. The code should be gone.

Crank the Jeep. Drive it forward, then backwards, and shut off. Repeat this procedure three times. The codes should clear on the fourth crank.

Use a OBDl or OBDll scan tool. Plug the tool into your Jeep's ALDL (Assembly Line Diagnostic Link), a small, rectangular electrical port usually located under the dash. Turn the key to the "on" position. Scan the computer for codes and select the option to clear the codes.

Wait for the code to clear itself automatically. Once the component is fixed, the check engine light disappears after several successful ignitions. The code is then stored for a while. If the engine continues to start and run without a re-occurrence of the original problem, the code is wiped out.

Items you will need

  • Wrench

  • Ignition key

  • OBDl or ll scanner

 How to Reset the Service Light in a Smart Car

Turn on the ignition so you have power only -- do not start the Smart car.

Select the maintenance indicator so it displays on the dashboard screen. You should see a wrench come up, as well as an indicator of your kilometerage/mileage remaining until the next service. You must do this within the first four seconds.

Turn off your ignition within 10 seconds. Your maintenance indicator should remain in your display.

Push and hold down the service button (the button on the left of the cluster) and turn on the ignition power. Leave the service button depressed.

Hold the service button depressed for another 10 seconds. The oil change display should reset. Your Smart car should display the distance remaining until the next maintenance after this.

 How to Reset the Service Light on a Volkswagen Passat

Sit in the driver's seat of the Passat and close all the doors.

Position the trip/odometer button to display the odometer mileage reading, then hold it down with the forefinger on your left hand.

Turn the ignition key to the "key-on/engine-off" position to turn on all the power options for the Passat without actually starting the engine. At this point, a service indicator light will display (in the form of a wrench).

Press the minute adjustment button on the clock (or turn the knob clockwise on European manufactured Passats) and release the trip/odometer button.

 How to Reset the Service Light on a 2003 Nissan Sentra

Pop up the hood of the car and locate the battery. The negative terminal has a black plastic covering. Find the negative battery clamp . Loosen the nut a bit using a 10 mm open-end wrench.

Remove the clamp from the battery terminal. Take care not to let it touch the positive side of the battery or cable.

Wait about 10 minutes, then reattach the negative battery cable to the negative side of the terminal and tighten the nut with the wrench.

Put the key into the ignition and wait for the service light to flash on the instrument panel, then shut off the engine. The light is now reset.

Items you will need

  • 10 mm open-end wrench

 How to Reset the Service Light in an Infiniti I35

Turn the Infiniti off if it is running. Leave the key in the ignition.

Look under the dash and steering wheel and locate the black On-Board Diagnostic (OBD) outlet.

Connect an OBD scanner to this port, then turn the scanner on.

Turn the key in ignition to will start the Infiniti's diagnostic system. It may take a few seconds before data flows from the Infiniti to the scanner.

Note the fault code, then clear the system once the fault code shows on the scanner's screen. While the orientation and configuration of scanners vary by brand, there should be a dedicated "Clear" button.

Disconnect the scanner, then turn the Infiniti off.

Turn the Infiniti back on and look at the instrument panel. The "Service Engine" light should be dark.

Items you will need

  • OBD-II scanner

 How to Reset the Service Light on a Mercedes E500

Sit in the driver side seat and ensure that all the vehicle doors are closed.

Switch the ignition to the "On" position, but do not turn the vehicle on.

Press the "0" button located on the left-hand side of your dashboard twice, within four seconds of switching the ignition to the "On" position.

Turn the ignition to the "Off" position, press and hold the "0" button while turning the ignition back to the "On" position.

Continue holding the "0" for 10 seconds, or until the dash display on your vehicle reads “Service In."

Turn the ignition off and restart the vehicle to verify that the service interval message is cleared from the system.

 How to Reset a Service Light on a 2006 Jeep Grand Cherokee Laredo

Put the Grand Cherokee's ignition key into the ignition and turn it to "Run." Don't start the engine.

Locate the "Step" button on the Grand Cherokee's instrument panel and press it. Press it again until it says "Miles to Service."

Press in and hold the button for about five seconds. It should read "Reset." This will turn off the service light on the display.

Items you will need

  • Ignition key

 How to Reset the Service Light on a Mini Cooper

Put the key into the ignition. Press in the trip odometer knob.

Turn the ignition key to the first or "I" position while still depressing the trip odometer knob. Look for a message that says "51A" on the dashboard control panel next to the mileage counter.

Release the trip odometer knob and wait about three seconds.

Depress the trip odometer knob again and wait about 10 seconds. Wait for a message that says "RST" on the dashboard control panel next to the mileage counter. Release the trip odometer knob.

Press in the trip odometer knob and wait for "15,000" to appear on the control panel. Release the knob and turn the ignition key to the "Off" position.

Items you will need

  • Ignition key

About the Author

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