Transmission software update
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Member
Joined: Jun 2016
Posts: 133
Likes: 42
2016 GLC300
Transmission software update
Had my '16 GLC in today for the fuse recall. Apparently there is a recent automatic transmission software update as well. The service writer said there was a "software update" that was due as well and they completed it. The receipt stated it was the AT software.
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
Newbie
Joined: Apr 2016
Posts: 8
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X253
Mine 2015/10 manufactured GLC. Had the software updated on last service visit ( updated headlamp software, audio20 software and transmission software).
i noticed the following ,
1. Gliding mode (E mode) was disabled on downhill, the shift from gliding mode back to normal was a bit rougher
2. I had problem when about to stop before roundabout then accelerate, car hesitate to move every now and then, i tried to replicate the behaviour but could not( i think when i was about 20km/h at 2nd gear and then accelerates the problem will happen). after software upgrade, the issue seems to be solved?! It did not happen again after good 1 month and I hope the problem will be solved cos it was quite dangerous and disturbing
i noticed the following ,
1. Gliding mode (E mode) was disabled on downhill, the shift from gliding mode back to normal was a bit rougher
2. I had problem when about to stop before roundabout then accelerate, car hesitate to move every now and then, i tried to replicate the behaviour but could not( i think when i was about 20km/h at 2nd gear and then accelerates the problem will happen). after software upgrade, the issue seems to be solved?! It did not happen again after good 1 month and I hope the problem will be solved cos it was quite dangerous and disturbing
Junior Member
Joined: May 2016
Posts: 17
Likes: 4
BMW 2011 535i + MB 2016 GLC300 + 2020 BMW 330i
Had my '16 GLC in today for the fuse recall. Apparently there is a recent automatic transmission software update as well. The service writer said there was a "software update" that was due as well and they completed it. The receipt stated it was the AT software.
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
Junior Member
Joined: Jun 2016
Posts: 16
Likes: 1
GLC 250
Had my '16 GLC in today for the fuse recall. Apparently there is a recent automatic transmission software update as well. The service writer said there was a "software update" that was due as well and they completed it. The receipt stated it was the AT software.
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
From day 1 I've noticed that when I drive around a corner and go to press on the accelerator, the car hesitates. It always seemed like a software programming thing to me. I haven't had a chance to check to see if the update cured this. But I will post on here when I notice (while driving).
I've just come across this thread, I've had the exact same issue, throttle hesitation at low speed when going over speed bumps or at slow, tight corners. Was very annoying. My July 2017 build GLC (gas/petrol) had its first 'A' service 6 weeks ago, they updated the transmission and engine control software and so far it seems much better. I have noticed it a few times, but nowhere as bad as it was before. Wondering if you guys have seen an improvement? Guess the car is as good as its software
Cheers
Newbie
Joined: Apr 2016
Posts: 8
Likes: 0
X253
I asked what kind of update to adaptive headlight and transmission ?! The MB tech said no idea and the update just popped from their company database. I hope the updates will solve problem with headlight ( LHS light on when car parked for unknown reason) and poor response on slow speed ( my experience was on 2nd gear less then 20 km/hr and need to accelerate)
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Thread Starter
Member
Joined: Jun 2016
Posts: 133
Likes: 42
2016 GLC300
Ok, I stole the car from my wife and found the transmission update has really improved the aforementioned shifting/hesitation issue. I consider it fixed and no longer a problem. Well done Mercedes-Benz engineering!
Not sure of the new software update version or where to find it. It was not listed on the dealer receipt.
Not sure of the new software update version or where to find it. It was not listed on the dealer receipt.
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Member
Joined: Nov 2015
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From: Winston-Salem, NC USA
2019 MB C300 4Matic (me); 2021 BMW 530i xDrive (husband)
I asked what kind of update to adaptive headlight and transmission ?! The MB tech said no idea and the update just popped from their company database. I hope the updates will solve problem with headlight ( LHS light on when car parked for unknown reason) and poor response on slow speed ( my experience was on 2nd gear less then 20 km/hr and need to accelerate)
MBWorld Fanatic!
Joined: Apr 2016
Posts: 1,131
Likes: 194
From: Ireland
GLC 300d 4matic
Ok, I stole the car from my wife and found the transmission update has really improved the aforementioned shifting/hesitation issue. I consider it fixed and no longer a problem. Well done Mercedes-Benz engineering!
Not sure of the new software update version or where to find it. It was not listed on the dealer receipt.
Not sure of the new software update version or where to find it. It was not listed on the dealer receipt.
Newbie
Joined: Apr 2016
Posts: 8
Likes: 0
X253
I tried to replicate the poor response after the software update, i never succeded and hopefully it was gone , my feeing was the shift from slow speed was a bit rougher.
Newbie
Joined: Apr 2016
Posts: 8
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X253
I took photos of the issue and sent to the dealer, the dealer said they never heard of it as well, but i doubted !!
Newbie
Joined: Jul 2017
Posts: 6
Likes: 1
GLC300
Hi Jetfuture and X253,
I've just come across this thread, I've had the exact same issue, throttle hesitation at low speed when going over speed bumps or at slow, tight corners. Was very annoying. My July 2017 build GLC (gas/petrol) had its first 'A' service 6 weeks ago, they updated the transmission and engine control software and so far it seems much better. I have noticed it a few times, but nowhere as bad as it was before. Wondering if you guys have seen an improvement? Guess the car is as good as its software
Cheers
I've just come across this thread, I've had the exact same issue, throttle hesitation at low speed when going over speed bumps or at slow, tight corners. Was very annoying. My July 2017 build GLC (gas/petrol) had its first 'A' service 6 weeks ago, they updated the transmission and engine control software and so far it seems much better. I have noticed it a few times, but nowhere as bad as it was before. Wondering if you guys have seen an improvement? Guess the car is as good as its software
Cheers
Cheers
Fritz
MBWorld Fanatic!
Joined: Apr 2016
Posts: 1,131
Likes: 194
From: Ireland
GLC 300d 4matic
Yes...the gearbox does in fact 'learn' your driving style. This is what I referred to in my earlier post.
