Turn signal problem

[cbonilla]

My left turn signal started the rapid blink typical of a burned out bulb. No problem, I thought, change a bulb.

Swapped the left front bulb out and it worked for a while. Then the same problem recurred. Took the housing out again, and fiddled with the bulb. It worked again for a little while

When it recurred once more I pulled the housing again, sprayed contact cleaner on both ends of the connector for the headlight assembly and reinstalled it.

Any thoughts on next diagnostic steps, or a Piinout of the electric connector?

Carlos

[cbonilla]

Sorry, it's an 03 Boxster S

[JFP in PA]

I would check for any corrosion in the bulb socket, and also check the ground for the light.

 

For an electrical diagram, you will need the Bentley manual.

[cbonilla]

Thx JFP. I did check for corrosion and didn't find any. Do you have an over/under on whether the problem is more likely to be found in gpthe headlight end of this connector or the Boxster end?

Carlos

[JFP in PA]

Thx JFP. I did check for corrosion and didn't find any. Do you have an over/under on whether the problem is more likely to be found in gpthe headlight end of this connector or the Boxster end?

Carlos

 

Because of the amount of plastics used in the head light assembly, each bulb has to have a clean path to a chassis ground.  I would to continuity and resistance test between the ground leg of the bulb socket in question and a solid chassis ground.  You should see no resistance and continuity with a multimeter.

[cbonilla]

Thank you, I will try that this weekend. I fear that, as with most intermittent failures, tracking it down will be difficult as the mere removal of the headlight seems to be enough to make it work. Needless to say, I've gotten very good at installing the light. So good, in fact, that the Porsche tool messed up the head on the rod you rotate to release the right headlight. I now have a 5mm socket firmly fixed to the head of that rod