System Fault Headlamp
04-17-2015, 07:09 PM
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System Fault Headlamp
I have an electrical bug in my 2008 3.6 Cayenne that is discharging the battery and the vehicle information display is intermittently saying there is a "System Fault Headlamp". Coinciding with this warning message, is a failure to be able to turn on the cruise by moving the steering column lever and a strange functioning of the turn signal/bright-dimmer lever (the brights won't turn off unless you move the turn signal and conversely the turn signal can be turned off by hitting the brights). I've checked the fuses in all three fuse boxes and removed the headlamp assemblies and thoroughly treated them with a hair dryer. Also, I've disconnected the battery in an attempt to reset the system. Nothing has seemed to have any effect. I'm curious if anyone else has experienced an electrical fault in the these left-side steering column levers. It seems like it has to be in the steering column with the cruise system being affected.
01-15-2016, 07:25 PM
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Hey wdjsinger
I have an electrical bug in my 2008 3.6 Cayenne that is discharging the battery and the vehicle information display is intermittently saying there is a "System Fault Headlamp". Coinciding with this warning message, is a failure to be able to turn on the cruise by moving the steering column lever and a strange functioning of the turn signal/bright-dimmer lever (the brights won't turn off unless you move the turn signal and conversely the turn signal can be turned off by hitting the brights). I've checked the fuses in all three fuse boxes and removed the headlamp assemblies and thoroughly treated them with a hair dryer. Also, I've disconnected the battery in an attempt to reset the system. Nothing has seemed to have any effect. I'm curious if anyone else has experienced an electrical fault in the these left-side steering column levers. It seems like it has to be in the steering column with the cruise system being affected.
05-08-2020, 09:59 PM
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I wish someone would know the answer...
I have an electrical bug in my 2008 3.6 Cayenne that is discharging the battery and the vehicle information display is intermittently saying there is a "System Fault Headlamp". Coinciding with this warning message, is a failure to be able to turn on the cruise by moving the steering column lever and a strange functioning of the turn signal/bright-dimmer lever (the brights won't turn off unless you move the turn signal and conversely the turn signal can be turned off by hitting the brights). I've checked the fuses in all three fuse boxes and removed the headlamp assemblies and thoroughly treated them with a hair dryer. Also, I've disconnected the battery in an attempt to reset the system. Nothing has seemed to have any effect. I'm curious if anyone else has experienced an electrical fault in the these left-side steering column levers. It seems like it has to be in the steering column with the cruise system being affected.
Would like to add: heat blower also doesn't work.
Need to Boost in 15 - 20 min, after engine was off every time.
Happened yesterday. Just turned ignition off, and in 20-30 min planned to go out, and thisss happened.
