LilSilverBullet

My ambient lighting started acting up about a month ago. The colors could not be changed and it stayed on after the car was off.
I tried doing factory setting and it did not help. However, it went away on its own after a few hours or after I turn on/off the car a few times.
This is very random occurrence and how it resolved itself. Not sure when it will stay on all night and then I might run into battery issue.
Just want to see if anyone else has the same issue.

I found this https://www.aclassclub.co.uk/threads...-issues.12503/ and it seems like software update would help.

*Another observation: Sometimes when it stayed on, I connected the battery tender to the car since I don't want it to run out of battery overnight. The ambient light turned off a short while after that.
So, I am not sure it has anything to do with battery of the car.

Deriggs007

I will say that after my vehicle was in the shop for 2 weeks. My car got a software update while there and it does make things work a bit different in the car. Differnet UI elements

vfxcxn0309

i got CTEK Battery Charger, always connect to starter battery when i park the car, first time when i connect the CTEK charger, it took 10 hours to reach full charge, and now i can feel that the batter is really happy i'm doing that, now only 2 hours, the battery shows full charge, i think this will benefit to that small battery ( maybe 1.2AH battery ) this will make it last longer. and turn off that engine On/Off will really help the battery to live longer.

LilSilverBullet

Update: I took my car to dealership to replace the windshield due to rock damage (after waiting 3+ months for parts) and asked SA to check on the ambient light. He found out that the software update for ambient lighting system is required (for multiple/various reported issues anyway - but it should help in my case). So far so good.

vfxcxn0309

looks like there is new update for MBUX, one owner got it, looks better

LilSilverBullet

Thank you. I got one from Battery Tender (4A model) and it took less than 30 mins to keep the battery fully charged over the weekend that I don't use it. The first time I used it it took about 1-2 hours. I also bought 1.25A Battery Tender before this one and it took many hours. I agree that using trickle charger keeps this car more stable power-wise if it sits.

LilSilverBullet

Thank you, I saw that post too. I haven't confirm my MBUX version yet and SA didn't say anything about MBUX update (I asked him to check).

vfxcxn0309

yes, always keep battery at full, and help other system works better

vfxcxn0309

i will go check tonight on my car, i want to have that update