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Welcome lights are going on and off by themselves throughout the day and night. I have had to call Lincoln roadside assistance 3 times for a jump start because it keeps draining my battery. It's been to the dealer 4 times and they cannot seem to fix it. They have updated the modules and replaced the battery but I got it back last night after being at dealer for a week just to have my car performing a light show for my neighbors again. MKC is back at dealer today and I am praying it gets resolved finally. I have wasted so much time and lost work because my battery keeps dying on me. Very frustrating!!!!!
 

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Does it happen at home only or other places?
 

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I've only noticed it at home. My neighbors keep telling me it goes off all night long. I've seen it going on during the day too. I've even moved the key fobs away from the car but it's still happening. I've had the car since March but it's died on me every since September. The dealer doesn't know what to do at this point. 😞
 

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Try turning off the welcome lighting on the information display. See page 112 and 115 of the owners manual. See if that helps.
 

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A couple of things. This was a problem on quite a few of the 2015s. They will try and tell you that your keyfob is to close to the vehicle causing this. Nope... that is not really the problem. There is a TSB for this issue with the welcome lighting. The dealer should know this... if not they have not worked on any MKCs in the last year ;)

ps... I think the TSB (TSB 14-0190) calls for resetting (or with my 2015) replacing the BCM/Body Control Module. I seem to recall the original TSBs had them doing some code upgrade... that did not fix it. Then later, they came out with the reset BCM procedure.
 

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Also note.. the TSB I reference relays the problem as non-functioning Welcome Lighting, but the deal where the car just lights up all by itself... is the same related issue. Mine was doing it the night I took delivery from the dealer... we all wondered what it was doing... figured it was because it was outside the window and we had the Key Fob at the salesmans desk right there.

Come to find out... the vehicle needs to be locked for the approach lighting to activate and has to have been locked for like a few minutes with no interaction with the Key Fob before it will setup to trigger on next Key Fob recognition. (My vehicle was unlocked, mirrors deployed/unfolded when it was doing it). Ehhh hindsight....
 

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I've only noticed it at home. My neighbors keep telling me it goes off all night long. I've seen it going on during the day too. I've even moved the key fobs away from the car but it's still happening. I've had the car since March but it's died on me every since September. The dealer doesn't know what to do at this point. 😞
Hi I just read your post and we are very curious. We just bought my wife a 2017 Lincoln MKX and only had it 3 weeks now. This past weekend the car was completely dead no signs previous of a weak battery. Nothing appeared to be on. Had to have it towed to Lincoln Dealership and we just got it back today. They replaced the Battery with a New one. It was fine but once we got home and parked in the garage we noticed something. The welcome lights kept coming on/off repeatedly by themselves on her car to but oddly it only happens when the car is locked mirrors folded in. We sat and watched the welcome lighting continually light up every 10-15 seconds. Then we decided to try it leaving the car unlocked side mirrors out still and the cars welcome lighting would be fine that way. So it must of been what caused her battery to go dead. After reading the below post where he said to turn “off the welcome lighting on the dash” we tried that and it worked! At least now we know what to do to hopefully prevent this malfunction from draining the battery. So now we know when it happens and in lock mode but what could be causing it is another question? We love the car but very concerned of having a dead battery every time we come out to the car. I would appreciate any tips or information about this if you’ve had better luck resolving this issue or found out anything else on how to fix it? Thank you kindly.
 

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There could be 2 issues. First, make sure that you keep the remote FOBs more than 10 feet away from the car when the doors are locked...farther away the better. Secondly there is a known issue with the welcome lighting continually checking to see if the key FOB is in range. I had the same issue with my '15 MKC and had to have a couple of electronic modules replaced which solved the problem.
 

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Hi I just read your post and we are very curious. We just bought my wife a 2017 Lincoln MKX and only had it 3 weeks now. This past weekend the car was completely dead no signs previous of a weak battery. Nothing appeared to be on. Had to have it towed to Lincoln Dealership and we just got it back today. They replaced the Battery with a New one. It was fine but once we got home and parked in the garage we noticed something. The welcome lights kept coming on/off repeatedly by themselves on her car to but oddly it only happens when the car is locked mirrors folded in. We sat and watched the welcome lighting continually light up every 10-15 seconds. Then we decided to try it leaving the car unlocked side mirrors out still and the cars welcome lighting would be fine that way. So it must of been what caused her battery to go dead. After reading the below post where he said to turn “off the welcome lighting on the dash” we tried that and it worked! At least now we know what to do to hopefully prevent this malfunction from draining the battery. So now we know when it happens and in lock mode but what could be causing it is another question? We love the car but very concerned of having a dead battery every time we come out to the car. I would appreciate any tips or information about this if you’ve had better luck resolving this issue or found out anything else on how to fix it? Thank you kindly.
When I first got my MKC, I routinely locked the car in the garage to get the mirrors to fold in so there was more room to move around the car. Noticed the same thing of the welcome lights repeatedly going on/off by themselves. Found out that the detection might be a bit further than 10 feet as the lights would go on when I was in the kitchen or dining room (above the garage). Also on the stairs from the 1st floor to the 2nd floor (ran beside the garage). Or also in my "man-cave" adjacent to the garage. Quit locking the car in the garage and just used the button to fold the mirrors in manually. Solved my problem - but probably not practical if you are parking outside your house.
 

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There could be 2 issues. First, make sure that you keep the remote FOBs more than 10 feet away from the car when the doors are locked...farther away the better. Secondly there is a known issue with the welcome lighting continually checking to see if the key FOB is in range. I had the same issue with my '15 MKC and had to have a couple of electronic modules replaced which solved the problem.
Yes we thought the same thing with both key fob’s and moved them to the other side of the house but the issue continued. It might be trying to pick up a key fob but in our case the distance of the fobs did not seem to matter. Do you happen to remember what modules were replaced on your MKC that resolved the issue?? Just curious.. We are scheduled to take the MKX back to the Dealer for them to run test this week so hope they find out what’s causing the welcome lights to continually come on/off in lock mode. This clearly must be what’s draining the battery. Thank you for any advice on this issue.
 

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It doesn't matter how far away the key FOBS are from the car, it will be continually checking for them to be in range so that it knows when to turn on the lights. In my case, it was not actually turning on the lights....it was just constantly checking to see if the FOB was in range. The 2 modules they changed were located in the driver's side rear passenger door.
 

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It doesn't matter how far away the key FOBS are from the car, it will be continually checking for them to be in range so that it knows when to turn on the lights. In my case, it was not actually turning on the lights....it was just constantly checking to see if the FOB was in range. The 2 modules they changed were located in the driver's side rear passenger door.
Ok that’s very interesting because it might be the exact same thing. I took the car to the dealer yesterday and of course when I went to show the tech ,” it would not do it” so that is very frustrating. Then when I got home I tried it again and nothing. So it just stopped oddly! This is so frustrating...
 
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