I have a 98 Jetta GL. Some times the Engine Light comes on, seemingly at random, since nothing is noticably wrong. Then the speedometer randomly comes on and off too. Usually these 2 things happen around each other, but in linking pattern. Also, my keyless entry stopped working. I tried to reprogram it, but it wouldnt. So for a few weeks it would just beep randomly when I was driving. Now it wont work at all! I have replaced the battery on my remote aswell. LoL sounds like alot eh? But the car runs fine, so I didnt want to take it to the dealership for no reason.
Could this be a ECU problem, or/and a Remote/keyless entry problem? Maybe just replace them? Also I recently found out there is a speedometer chip, would that need to be replaced already? Its only 80k miles!
Thanks in advance for any help/suggestions!