acecert

Conflicted on deciding whether or not to purchase the 2024 GLC 300 Coupe and requesting input from those who have this vehicle. It's hard to balance the saturation of the negative experiences since most are apt to be vocal when having issues vs. not being vocal when things are going fine (or have gone fine since repairs have been done.). This post about really caused me to pause on the car regarding the software updates that were applied but few reported back whether or not there were ongoing issues afterward https://mbworld.org/forums/glc-class...not-start.html

The above link was for the 2023 model, but the time span between the 2023 release of that vehicle and the release of the 2024 model was narrow so it makes me wonder how much time they actually had to discover the main issues. I called a dealership service department who mentioned to me that Mercedes is in transition and going through "growing pains" in the technology area particularly with trying to get the tech to work with combustible engines (vs. electric). A friend of mine who has the EQS sedan with the MBUX multimedia system told me he too had the experience of having his car not start and was able to get the car to start eventually and drove it to the dealer for repair and hasn't had trouble in 2 years.

Do those of you who own the 2023/2024 GLC with the MBUX system find that the initial issues experienced based on the updated model have been rectified? Have you experienced ongoing problems and if so, what are they? Are there members out there who own this vehicle that haven't had any major issues? Your input is very much appreciated!

DF777

2023 or 2034 basically the same issues with no fix.
This is a complaint from the NHTSA website.
Brand new '24 GLC300 4MATIC. Engine light came on with no error message. Brought it in for service. Miscellaneous engine repair states: "Found current code POA7F00 in drivetrain control unit. Followed LI54.10-P-077250. Cleared codes. Drained 48V battery to below 25% SOC. Charged vehicle to 70% SOC. Job complete." Service foreman mentioned that the service performed may not resolve issue. He contacted Mercedes-Benz Engineering and said no fix at this time and no ETA. Left service with no more engine light on. However, it didn't take long, and the engine light came on again. I called service again, and I was asked to take the car back in to be sure it is not anything else. Took my vehicle back, and service foreman diagnosed the issue. Code is the same as before with issues on the 48V battery. Service foreman is unsure of the exact issue. Mercedes-Benz Engineering did not provide details of the problem. I believe this issue poses a safety risk without knowing for sure what is the real cause and what might be the effects on the vehicle. This GLC is my family daily use, and it has become a big safety concern on the road. Service was very helpful and accommodating with my vehicle's issues. Unfortunately, fix is unknown from Mercedes-Benz to be able to resolve. I have also called the Mercedes-Benz Customer Care, 800-367-6372. Unfortunately, there is nothing they can do. I've asked to open a case. Case # 04660590.

Urdriver

Same issue. Brand new 2024 MB GLC 300 with less than 750 miles (1/2024) and engine light comes on. Dealer said fault code POA7F00; no fix at this time. 48V battery related error. Told me to ignore light and keep driving, if the car drive feels normal otherwise. MB working on a software fix that requires a dealer visit when its available. This was the fix for other MB models in the past with this type of engine.

EQS-GLC

I have the 2024 GLC 300 4 Matic coupe. I’ve had it for almost a month with zero issues. Car is incredible.




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acecert

Very nice! I hope you continue not to experience issues. It's a very nice car.

BigDeeLA

Love the white coupe with black rims.. Ive ordered a silver one with the same wheel… but also have some concerns like the OP.

Donato61

Same situation, brand new 2024 GLC 300 with 400 miles. Engine light is on. Dealer has the car for a few days now. No word on the fix.

cjc52315

I’ve had 2024 GLC300 4 matic for about 3 months with 3100 miles without any issues.

I’ve been a loyal Lexus customer for the past 25 years and currently own Lexus 2018 NX300 awd and 2017 GS350 awd. I was going to purchase another NX but the lack of spare tire made me switch to Mercedes. I actually feel the GLC is more solid than Lexus, but I still purchased the extend warranty. 🙂

rlukehale

I’ll chime in as well, I’ve owned a 2024 GLC for 3 months now, coming up on 7,000 miles. I haven’t had any issues out of the car so far.

fox1

Bought 2023 GLC 300 CPO loaner car w/6800 miles from MB Dealership. Love the car, no issues.

RA040624

Hello, I have a new 2024 GLC 300 that was purchased in November. Within 200 mi I was left stranded with multiple engine console lights coming on, this happened on the morning of December 26th after a 25 mile drive home on Christmas Eve with headlights on. Eventually the car started, and I brought it into the dealership the next morning.
The dealership did a 16 module software update. I had the car back in 2 days.
One quirky item that I did notice with the mbux system, it seems that a few times that I have had over-the-air software updates I have had settings change on my profile with in the infotainment system. I am the only one driving this car, and like I said I have seen changes after the over-the-air updates have taken place.
But it all has been running very well and I enjoy driving this spunky little 4-cylinder!

cjc52315

I guess it’s my turn now.

A picture worth a thousand words.

cjc52315

Update
Mechanic says it’s the left front wheel speed sensor blocked by debris caused the check engine light and abs, traction control lights went off.

Jkushlick

We are having the same issue. After 8 months of owning the car and six service attempts to fix the engine warning lights we are truly concerned about driving the car when the light goes on and asked for Mercedes forvbuy back. Our case is still open. Can you tell us what you did? Based on this posting the problem started early and there is certainly no fix.

Jkushlick

Did anyone else have this problem on the 2023/2034 GLC models where Mercedes was unable to fix the engine light failure. Please reply we are very concern about the safety in driving the vehicle.

ralawren

We bought a 2023 GLC300 4matic in May 2023. In October my wife was stranded with many warnings and the software stuck in a loop that prevented us from restarting the car. MB had to tow it to the local dealer where they did the 16 module software update. One week later we started seeing similar issues with warnings, but were not stranded. So we took it in again for 8+ software module updates.

In January we received a check engine light warning enroute to visit my brother out of town. We diverted to the MB Service Center, they checked the code and cleared it but told us to come back in for a software update. 800 miles later we finally did, another extensive software update. My wife picked up the car after two days, drove 4 miles away, parked for 30 minutes and when driving home received the check engine light warning again.

Back to dealer, they did another software update. That was a few weeks ago. Everything seems to be fine now, and we were only stranded once.

But there is a recall coming to replace the fuse box or something to do with the fuse box. MB has not released it for the actual work to be performed but has notified the Service Centers to expect it in April/May.

I don't know if MB has just made the software too complicated or they outsourced the development to a firm that doesn't know how to adequately test. But something is very wrong! Since the powertrain and MBUX are similar in the C300 Sedan which has been out for 18 months earlier than the GLC release I expected these types of issues to be resolved.

One more trip to the Service Center for a "software update" and we are going to request a buy back.

cake2

I had the update done the second day it came out in February. The engine light came back on two weeks later. The next step is to install a new battery. This will be the third attempt at trying to resolve the issue.

arvindkumar

I have the 2023 GLC 300 and I had the same engine light warning show up twice in the last 8 months. It stayed for two days and then vanished automatically before we could take the car to MB. I am not sure if it is a false positive.

But one other issue I have is the MBUX system turning off with a loud POP when driving and it occurs almost every ride once. The car reboots its multimedia system ( driver screen and Multimedia screen) while driving. I have not been able to find out the root cause. I guess it has to do with Apple car play, when reported to MB service center, they had absolutely no clue

To reproduce the POP sound, press and hold the power button on the multimedia screen.