Hi everyone, just saying hello! I’m new here and pretty new to Fiat as well. Right now I’m troubleshooting some electrical issues on my 2001 Fiat Panda 4x4, and I’m here to learn from the forum and the people with more experience.
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Welcome to the Fiat forum. Im sure someone will be able to give you some tips
Hi! Welcome to the forum!
That was quick. Good job!
What were the problems?
What were the problems?
Suddenly, the low beam stopped working, leaving only the parking lights on. The high beam is still working.
This is quite critical here in the north, especially with the short daylight hours these days.
And was that relay the cause? I mean, it probably certainly is. But did you get a new one, is it working now or you didn't get new relay yet?
Don't forget to use spray contact cleaner on the socket pins relay sits in.
Is it on the headlights circuit? If so, new relay should fix it.
That fits with what the photo shows.
Severe oxidation on the high-current terminals, clear heat damage, likely high contact resistance.
Headlights draw high continuous current, especially low beam (they stay on all the time). When relay contacts corrode voltage drops, contacts overheat, eventually the circuit opens completely.
That’s exactly the symptom you have: low beam dead.
Relay still clicks
High beam may still work
Parking lights work
Low beam dead
Because low beam current is higher and continuous, it fails first.
Severe oxidation on the high-current terminals, clear heat damage, likely high contact resistance.
Headlights draw high continuous current, especially low beam (they stay on all the time). When relay contacts corrode voltage drops, contacts overheat, eventually the circuit opens completely.
That’s exactly the symptom you have: low beam dead.
Relay still clicks
High beam may still work
Parking lights work
Low beam dead
Because low beam current is higher and continuous, it fails first.
Then I suspect oxidation on the commutator stick. I think you can't really get inside to directly reach those contacts without damaging something, but you totally can spray contact cleaner there. The contacts are exactly inside the stick. So spray some cleaner and do some movements, repeatedly turn on an off the lights. They should clean and problem should be fixed.