2023 GLC will not start
BMW X3 is a great car in this segment, as are the Genesis and Mazda offerings.
Basically X3 wouldn't start. And its got a digistick shifter too, so wouldn't get into Neutral, so tow-truck had to drag it up on the flatbed, all four wheels squealing along the way.
Hope the GLC software gets fixed for everyone ASAP!! The car seems to have such promise. Too bad the rollout has been so bad so far.
When a wider view is taken, it can be seen that MB is a producer of junk, serviced by junk dealers. And that BMW is in a golden age with its products and its business.
Basically X3 wouldn't start. And its got a digistick shifter too, so wouldn't get into Neutral, so tow-truck had to drag it up on the flatbed, all four wheels squealing along the way.
Hope the GLC software gets fixed for everyone ASAP!! The car seems to have such promise. Too bad the rollout has been so bad so far.




The Best of Mercedes & AMG
I hope the GLCs get better in 2024/2025 and get some better configurations in North America so I can consider one. I don't like that you can't get a loaded one without a panoramic roof (at least based on what I've seen on that ground).
When a wider view is taken, it can be seen that MB is a producer of junk, serviced by junk dealers. And that BMW is in a golden age with its products and its business.
I have a suspect that it is something linked to the 12/48 batteries SoC management. This morning I "played" a bit with the radio and the seat positioning, afterwards I did a short trip, and, at the second key cycle, this is what I found:
https://youtu.be/c8HA9V9Kdkk
I called the ME sos and they sent me a technician from the nearest dealer, who tried different power cycles without succeeding till he unplugged the 12V battery in the trunk. And.. the car started again without errors. They drove the vehicle to the dealer without issue and it's now under service.
I don't think it's anything hardware, it seems like a SW bug in managing the state of charge between the two batteries. Quite disappointing from such a MB car.
I'll keep you posted.
I got back the car from the workshop. They did a couple of SW updates on the brake and PT control units. Asked a direct question "did you find the issue?", there was not a clear reply, claiming that there might still be an issue coming from the 48V battery and asked if I want to change it. Tbh, my GLC was assembled the first week of Jule, so I do not believe that any other battery in the warehouse would be any different from the one currently installed in the car. So, I declined.
I made 200km+ in these days and no issue so far, let's see..
Last edited by slashante; Aug 15, 2023 at 04:11 AM.
That being said, what year and model MB would be considered more/most reliable if my dealer can work something out ? 2023 or 2024 GLE? 2023 or 2024 GLB?
Last edited by newglcdriver; Aug 15, 2023 at 02:06 PM.
That being said, what year and model MB would be considered more/most reliable if my dealer can work something out ? 2023 or 2024 GLE? 2023 or 2024 GLB?
Same thing with my friend and his ford focus a few years back. Told him to get lost basically until a lawyer got involved.
That being said, what year and model MB would be considered more/most reliable if my dealer can work something out ? 2023 or 2024 GLE? 2023 or 2024 GLB?
I had a weird issue, not sure it's similar but it leads to the vehicule not starting.
I try to unlock the car. All the doors except the driver door unlock. I decide to open the passenger door, and open the driver door from inside which works. I then enter, but the screens stay off. I hear the welcoming sound though. I put my foot on the break and try to start the car. I hear a quick bip coming from behind, the car doesn't start, and suddenly the wipers turn on, my phone connects with the car and starts the musique, but the screens are still off, the ambient lighting turns on as well. At that point, the car doesn't respond to the key anymore, doesn't lock or unlock.
I leave it like that, and after an hour or 2, I'm able to unlock it normally (driver door as well), and start it normally.
It happened to me 3 times, now it's in their hands, and it works normally, they don't seem to have found the origin of the issue. I will meet with the director of the dealership next week to find a solution, probably will try to ask for a new one (another model?).
Have you ever experienced that? It was as if not unlocking the driver door caused it to go on some sort of security mode, with wipers on, preventing you from starting it and not answering the key anymore. Could it be an issue with the connection between the key and the drivers door?
Thank you!
That being said, what year and model MB would be considered more/most reliable if my dealer can work something out ? 2023 or 2024 GLE? 2023 or 2024 GLB?
I heard back as well, and they told me the same thing. We provided you a loaner, no compensation for the month it was in the shop, and we won’t be buying it back. After the star was replaced, I haven’t had any issues, and I’m just waiting on the next issue. I’ll be getting an attorney.
Update: check engine light is now on...... it's always a surprise with this car!
Last edited by medic8185; Aug 19, 2023 at 05:15 PM.
Update: check engine light is now on...... it's always a surprise with this car!
Car is driven maybe twice a week for at least an hour. This should not be happening. No interior/exterior lights left on, radio, etc. Got another critically low starter battery notification today, accessed the hidden service menu and it showed SOC (state of charge) at 30%. Turned on car left it running for 15ish minutes and it charged to 70%. However wouldn’t go over. Noticed this also fluctuates as you drive, meaning it can decrease to 65% and then go back up to 68%. Thought this was abnormal so brought it into service today.
Tech said he noticed 2 control systems being on despite the car being “asleep”. It is left unlocked in the garage but this uses significantly less battery than if it were locked as tow away protection and interior motion sensor and other systems aren’t activated. Key is brought inside the house 40ish feet away from the garage so it’s not a proximity issue. He also said there were some software updates (not open recalls/campaigns) for the canbus controller and he did a manual update on the parking sensor module.
Will report updates in a week or so. Hope it fixed this. Worth noting that the battery still hasn’t gone over 70% SOC. When off, voltage is right around 12, when turning on its 14.5 for 10ish seconds then goes to 13 and stays there despite rpm or speed. FWIW, I checked the menu on my 2021 c43 and when off it’s 12 but running it’s always at or above 14. When in first or second gear it’s 14 but once I’m moving it goes up to around 14.6-14.7. I chalked this up to the 48v mild hybrid system on the GLC but who knows could be a bad battery.
The tech said there was only one module on that car but there is a second module on the GLC that has a more sophisticated proximity system, although I don’t really buy that. Like I said in my last post, the key was nowhere near the car so it was definitely buggy software that drained the battery







