What does it mean?
B2583 is a Body (airbags, seat belts, body electronics) fault code. It indicates: Left Rear Tail Marker Lamp Short to Ground .
Symptoms
- Left rear marker or side position lamp does not light
- Fuse feeding the position lamps blows, taking other small lamps with it
- Cluster shows a lamp outage warning after the lights are switched on
- Other position lamps on the same fuse fail at the same moment
- Fault comes and goes with wet weather
- Water visible inside the small corner lamp lens
Likely causes
- Corroded marker lamp socket with the contact resting on the metal shell
- Water in the rear corner lamp housing after the lens seal or a rubber gasket hardened with age
- Short lead from the marker lamp chafed against the body panel or a mounting bracket
- Marker lamp lens cracked or pushed in by a knock, letting spray onto the terminals
- Marker lamp assembly refitted with the wrong bulb or a bulb forced into the holder
- Rear harness pinched by trim or damaged in a previous rear body repair
- Failed lamp output driver in the rear or body control module
How to fix it
- Remove the left rear marker lamp assembly and check for water, a hardened seal and a corroded socket
- Inspect the socket contacts closely for a pin bent onto the shell and for green oxide
- Measure resistance from the marker lamp feed to ground with the lamp unplugged to prove where the short lies
- Check the short pigtail behind the lamp for chafing against sheet metal
- Verify the correct bulb type is fitted and that it seats without forcing
- Repair or replace the socket and pigtail, dry and reseal the housing
- Clear the code, switch the position lamps on and confirm the fuse holds and all marker lamps light