Loss of 4th Gear
Thread Starter
Newbie
Joined: Dec 2016
Posts: 7
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GLK
Loss of 4th Gear
Hi All
My GLK has lost its 4th gear, however 1st, 2nd, 3rd 5th, 6th and Reverse work. I have taken it to the dealer and they suggest it's a loose screw within the gear box. They can dismantle it and attempt to fix it without any guarantee it will work; which may ultimately require a new gear box.
Can someone suggest what my options are or what you would do?
Has anyone had this issue or know if it has occurred before?
It pretty frustrating to find that you purchase a high end vehicle and after 26,000 km you need a new gearbox.
Thanks
My GLK has lost its 4th gear, however 1st, 2nd, 3rd 5th, 6th and Reverse work. I have taken it to the dealer and they suggest it's a loose screw within the gear box. They can dismantle it and attempt to fix it without any guarantee it will work; which may ultimately require a new gear box.
Can someone suggest what my options are or what you would do?
Has anyone had this issue or know if it has occurred before?
It pretty frustrating to find that you purchase a high end vehicle and after 26,000 km you need a new gearbox.
Thanks
Last edited by jadreng; Dec 6, 2016 at 10:59 AM.
Thread Starter
Newbie
Joined: Dec 2016
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GLK
They have done the test and i believe it does not appear with an issue in the quick test, its a mechanical thing - they have had to check the issue with other dealers to verify what it could be. The loose screw inside seems possible however they are not sure until they open it up, i am guessing.
Member
Joined: Feb 2014
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2014 glk 250BT (RIP, 3/1/17}, 2010 C300
You should get it fixed. Mechanical things that break tend to break other mechanical things. From the mileage you report isn't your car under warranty for a transmission failure?
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Joined: Feb 2014
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2014 glk 250BT (RIP, 3/1/17}, 2010 C300
[QUOTE=jadreng;6988054]I don't know what the warranty is for transmission in Europe however you have raised a good point which i will ask, the vehicle has 5 years though don't know if that makes a difference.
Thanks[/QUOTE
In the US the warranty is 4yr 50k miles unless there is an extended warranty purchase. Good Luck.
Thanks[/QUOTE
In the US the warranty is 4yr 50k miles unless there is an extended warranty purchase. Good Luck.
Super Member
Joined: Jan 2015
Posts: 920
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From: Worcestershire UK
W124 260E
Not a screw in the gear box .Do a Google search on as its a comon fault, reading about this yesterday . Some have had this with a vacuum fault ,but mainly electrical ..But dont look at the box .
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GLK
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Thread Starter
Newbie
Joined: Dec 2016
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GLK
Super Member
Joined: Jan 2015
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From: Worcestershire UK
W124 260E
JADRENG Please do a google search .It will give you a way to reset the transmission ..Do this first .just incase it puts it right for you ..In the google search box put -
Reset Transmission adaptive shifting-How to Pogram
It will take you to MB Medic The ecu will set the auto box up to run after 40 shifts . So a reset could put it right,
Reset Transmission adaptive shifting-How to Pogram
It will take you to MB Medic The ecu will set the auto box up to run after 40 shifts . So a reset could put it right,
Super Member
Joined: Jan 2015
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From: Worcestershire UK
W124 260E
Also to help you more , members will need to know just what motor you have the profile is not very informative . Like put in your post the type of gearbox and the year of the car .plus the engine type .The more information will help members to help you faster. I can search for you , but could be looking for another tye of gear box.So the out come is wrong ..
Thread Starter
Newbie
Joined: Dec 2016
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GLK
Also to help you more , members will need to know just what motor you have the profile is not very informative . Like put in your post the type of gearbox and the year of the car .plus the engine type .The more information will help members to help you faster. I can search for you , but could be looking for another tye of gear box.So the out come is wrong ..
It a Diesel; 2011; GLK-Class; Manual Transmission.
Super Member
Joined: Jan 2015
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From: Worcestershire UK
W124 260E
Sorry i have to give up on this .I can find nothing about the manual box .And thinking about it if 4th is missing there is nothing outside the box to get it back .I am thinking that the box will need removing to fix this fault .Bad news i think .
Super Member
Joined: Jan 2015
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From: Worcestershire UK
W124 260E
I am still looking as i am not sure ,but i might find something ..I can see that the linkage has this type of plastic knuckle that come away from the selector arm .But i have to find out if your box is the same.
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GLK
I think that they are going to have to remove the gear box and open it up, but the possibilities as to what is wrong are endless.
I think i am going to contact MB Service Desk in Brussels and explain the issue.
It not as if this happens frequently so it maybe a parts defective, don't think you can brake the inside of a gearbox and if something is loose like a screw, its a manufacturing issue which has led to this.
I think i am going to contact MB Service Desk in Brussels and explain the issue.
It not as if this happens frequently so it maybe a parts defective, don't think you can brake the inside of a gearbox and if something is loose like a screw, its a manufacturing issue which has led to this.
Super Member
Joined: Jan 2015
Posts: 920
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From: Worcestershire UK
W124 260E
jadreng i wish you good luck . Only thing i find is that , as auto boxes need auto fluid and its vital .Also so manual boxes do use atf . And also manual boxes have to be at the righ level in the gearbox .But also selectors have been talked about if you miss a gear And yes i would get Mercedes involved as it might be a failure on their part
Last edited by optimusprime m1; Dec 7, 2016 at 11:03 AM.
Super Member
Joined: Aug 2011
Posts: 861
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From: Philly area
350 GLK, C280
Sounds like a syncro is shot. This is a ring that actually connects the gear to the shaft and the gears are always in mesh. The sncro is the device that keeps the gears from crunching when you shift. It is a disk with tabs that slide into the gear hub of gear you select. there are many sycros in your gear box. The one for 4th gear is shot. You can either drive with out 4th gear or have the box removed and rebuilt. Most reliable transmission shops can do this job.
I don't know of many screws inside a gear box. Maybe a bearing holder, but that would not drop 4th gear.
I don't know of many screws inside a gear box. Maybe a bearing holder, but that would not drop 4th gear.
Super Member
Joined: Jan 2015
Posts: 920
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From: Worcestershire UK
W124 260E
jedreng Asking on my merc forum for you They want to know what happens as you get to 3rd gear and you go to select 4th .Can you fell anything in there, any crunching ,or will it just go in to 5th . So i can pass this on if you can say how it its.
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From: Tucson, Az
10 GLK350/ 15 Accord/ 94 Supra Turbo
Doesn't make sense to me, what do you mean it's a manual and 4th is gone? If it's a manual the it points to synchro/gear issue, you will typical has crunch/grinding noise and feedback when trying 4th gear if it's a manual. It could be synchro, gears l, or forks in most scenario.
Most of the feedback you got is for the auto box
Most of the feedback you got is for the auto box
Last edited by AzCamel; Dec 8, 2016 at 11:13 AM.
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