03 MDX key wont turn off engine if lights are on
An interesting problem just popped up on our 2003 MDX base model (not touring) - non-nav.
If the MDX is running and you turn the key to the off position, while the headlights are on (parking lights, on or auto), the engine will not shut off.
It seems like everything else happens that you would normally expect when you turn off the key - the climate control system turns off, the big info display (mpg, time, etc) shuts off, the interior lights come on, the tach drops to 0, etc.
If you then turn off the headlights, the engine will shut off. very strange...
If you turn off the ignition with the headlights in the "off" position, the engine shuts off in a normal fashion.
- even if the headlights are off, the headlight indicator light on the dash is lit (as if the lights are on).
- if you have the key out, headlights on, engine running, occasionally, the odometer will flash and the tach needle with jump a little.
I was thinking this might be a faulty ignition switch, but the whole headlight thing has me very confused.
Has anyone encountered this before? any ideas on what to check/fix?