How to Reset the quot;Service Engine Soonquot; Light on a BMW 323CI


1. Locate the DLC (diagnostic link connector) in your BMW 323 CI. It is located under the driver's side dashboard, left of the steering wheel. Compare the plug end of the code reader/eraser with the shape and size of the DLC.
2. Plug the code reader/eraser into the DLC and turn the ignition key two clicks to the 'key-on/engine-off' position. This will power up the code reader and the BMW's accessories without running the engine.
3. Read the code reader's onscreen menu display. There will be four to six options on the screen. Locate the 'enter' button and the arrow 'scroll' buttons that move the cursor up and down on the menu screen.
4. Scroll to 'Erase codes' or 'Clear Codes' on the menu and press 'enter.' Follow the directions on the screen.
5. Turn on the engine and locate the 'service engine soon' light on the dashboard panel. It should be out. If the light comes back on, have the BMW 323 CI serviced, or use the code reader to find out what is tripping the 'service engine soon' light.