[alexander.b]

Hello, I have XTS 2015 with 155,000 on it, a few weeks ago bulbs stop working so I replace them with new ones, and after few days the DRL stop working and few days after I started to have problem while I am driving in night all the lights stop working and I have to turn them off and on again and they start working...

please help

 

[johndlewis]

Hi Alexander, unfortunately a few things could be a play. I haven't experienced this particular issue on the XTS, but had a 2008 DTS that had a similar headlight problems. Long story short, I found each headlamp had a high voltage ballast that misbehaved when either the alternator's voltage crept up a little high (say, past +15VDC) or if the battery had a surface charge on it. Additionally, pending on the bulbs you used, they may be drawing excessive current, enough to cause your ballasts to shut off altogether. I had a problem with a ballast (again, on the DTS) that had a leaky ground, causing the ballast to shut off altogether.

 

[alexander.b]

So What should I do ? =) if there are problems with the bulbs and they turn of why the DTS stop working before they started turn off ?

 

[The Raven]

So What should I do ? =) if there are problems with the bulbs and they turn of why the DTS stop working before they started turn off ?

Based on John's information, i'd say get your battery tested. That's one lead to check out. I had a 2007 CTS that started doing really random, weird things. It would just completely "go dead"...shut off, completely...no lights, no NOTHING, completely dark car. Then it would restart and be completely fine for a few hours, or weeks. Sometimes the headlights would just shut off, or the stereo, or climate control settings would change at random. It was like a crazy car. Never saw anything like it. One day I just happened to have the voltage indicator option turned on in the DIC and I noticed that the voltage was fluctuating wildly - 12v to over 15v in just seconds, back and forth...then it would stop and just sit at 13.8v. I figured it was an alternator issue. But when I explained everything to the dealer they said "it's probably the battery". I couldn't understand how the battery could cause fluctuations like that, but it turned out that the battery had a bad cell. I put a new battery in and it fixed everything.

So check it out, it's a cheap and easy avenue to try.

 

[GFK]

I am not claiming that it has all the answers; but, a dealership may be able to help with this one.

 

[alexander.b]

current situation: the left headlight not working and the right DRL not working, and something all the light just turn off,

any module that control them ?

 

[ccclarke]

You're not likely to have much luck troubleshooting an electrical issue with just your eyes and a keyboard. Unless you have: A wiring diagram, troubleshooting experience, and proper tools, your odds of determining the cause of an intermittent lighting fault are close to zero.

Troubleshooting the wiring harnesses from the lights to wherever they're powered/controlled off the main harness, looking for tie points or a connector common to both sides is how I'd approach it. If the symptoms changed after you replaced bulbs, that's something else to consider. There may be more than one fault.

The Body Control module controls the lights. I wouldn't start plugging and chugging parts unless I could prove they were bad first. You could have a short in a wiring harness and fry a new BCM. If your electrical troubleshooting expertise is limited to bulbs and fuses, this is probably more than you want to be diving into.

Being a major safety issue, you have little choice but to get it fixed sooner --rather than later by someone who knows what they're doing. Your local dealership is probably your best option, and certainly better than wasting your time remotely troubleshooting it over the web.

Two weeks of intermittent night-time lighting is two weeks too long. The ticket you're tempting the Fickle Finger of Fate to bestow upon you might be more expensive than the fix.

 

[deajeffrost]

Hello, I have XTS 2015 with 155,000 on it, a few weeks ago bulbs stop working so I replace them with new ones, and after few days the DRL stop working and few days after I started to have problem while I am driving in night all the lights stop working and I have to turn them off and on again and they start working...

please help

I have the same problem with a 2014 XTS, curious how you solved it. I was thinking of retuning the bulbs for a more expensive set.

 

[Excalibur]

I have the same problem with a 2014 XTS, curious how you solved it. I was thinking of retuning the bulbs for a more expensive set.

The OP last posted over 4 years ago. It's unlikely you will get a reply.