Release. When the LED lights up, press and hold the button for . The LED should blink rapidly. Turn the ignition off, then on again to verify code 1-1-1 . 💡 Troubleshooting Tips
: Occupying the front third, the engine bay is notoriously spacious. In many models, such as the
Turn the ignition key to Position II (run position, but do not start the engine).
Alternator, power steering pump, battery, and the main fuse/relay panel (on 740/940 models, this is inside behind the ash tray, but 240s have fender-mounted components).
If you are dealing with a rough idle or a "Check Engine" light, a vacuum leak is a prime suspect. The best resource for repairing these lines is often a diagram located on a sticker under the hood. However, if this sticker is missing or faded, several online resources provide detailed alternatives.