2015 GLK250 window buttons not working and other questions
Thread Starter
Newbie
Joined: Dec 2019
Posts: 14
Likes: 3
GLK 250
2015 GLK250 window buttons not working and other questions
Hey all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
Member
Joined: Mar 2015
Posts: 239
Likes: 39
From: Vancouver
14 GLK 250
Hey all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
2) inflate tire pressures to the right pressure and press ok to restart the indicator. Your Canadian glk does not have TPMS in the wheels, it instead senses any difference in rotation between tires and knows if a tire is losing air because it rotates at a different speed. Doesn't matter that the tires aren't run-flats.
3) in the center console there is a Mercedes plug. You attach the adapter to that which has an aux plug. Should have come with your car, but you can get them from dealer or on kijii or craigslist:
https://vancouver.craigslist.org/pml...992320288.html
Senior Member
Joined: Feb 2018
Posts: 482
Likes: 140
GLK250 ML350
Hey all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
I recently picked up a 2015 GLK250 with 97,000 kms on it. It's my first MB and I'm loving it! I have a couple questions hopefully someone can answer for me.
The first one is the biggest. A few weeks ago the window buttons on the driver door stopped working. There's a panel that has buttons for the windows and adjusting the mirrors. None of the buttons work and they don't light up. If I'm outside the car and hold down the lock-unlock buttons on the remote all the windows will go up and down. The button on the passenger side works for that window. Any ideas on what might be wrong? I'm planning on taking the driver side door apart soon and checking the electrical connections. I don't have a fuse chart in the back of my car so I found one online. I checked out fuses 2, 3, 12, 39 and 41, as these seemed like they would be the ones for the windows, and they all tested fine. Any ideas? I'm all ears!
I don't have runflat tires. On the instrument cluster it says "Run Flat Indicator Active. Press 'OK' to Restart". Is there a way to change it to show tire pressure instead?
Does this thing have an AUX jack? I keep reading in the manual and other places that it has one, but I can't find it anywhere so I assume it doesn't, but thought I'd ask anyway!
Thanks all!
2)No. Canadian versions does not have individual tpms. Trust me, this is way better when you switch tire or having summer and winter setup
Thread Starter
Newbie
Joined: Dec 2019
Posts: 14
Likes: 3
GLK 250
1) This one is hard but I would check all the fuses, and then the connection at the door switch
2) inflate tire pressures to the right pressure and press ok to restart the indicator. Your Canadian glk does not have TPMS in the wheels, it instead senses any difference in rotation between tires and knows if a tire is losing air because it rotates at a different speed. Doesn't matter that the tires aren't run-flats.
3) in the center console there is a Mercedes plug. You attach the adapter to that which has an aux plug. Should have come with your car, but you can get them from dealer or on kijii or craigslist:
https://vancouver.craigslist.org/pml...992320288.html
https://www.amazon.ca/3-5mm-Interfac.../dp/B011BH7B34
2) inflate tire pressures to the right pressure and press ok to restart the indicator. Your Canadian glk does not have TPMS in the wheels, it instead senses any difference in rotation between tires and knows if a tire is losing air because it rotates at a different speed. Doesn't matter that the tires aren't run-flats.
3) in the center console there is a Mercedes plug. You attach the adapter to that which has an aux plug. Should have come with your car, but you can get them from dealer or on kijii or craigslist:
https://vancouver.craigslist.org/pml...992320288.html
https://www.amazon.ca/3-5mm-Interfac.../dp/B011BH7B34
Those cables definitely didn't come with my car. I got used used a few months ago so I'm not surprised the original owner didn't include them. I took a look at the link you posted. If by center console you mean the storage space under the armrest, all I seem to have in there is a USB port. I don't seem to have anything that I could plug those cables into
If I don't have the port, I assume it means no aux port for me.Hmmm. It stopped working Nov 1. We've had some warm days around here so I don't imagine it would STILL be wet if that's what happened but it's worth a shot. It's quicker than pulling the door apart!
Newbie
Joined: Sep 2019
Posts: 6
Likes: 0
2025 GLC 300
I have a 2015 GLK350 and it also only has the USB port in the center console and no port in the glovebox for the MB multimedia interface. So I'm stuck without an AUX port but it's ok since I mainly use Bluetooth. On top of that I can't get any device (Android or Apple) to play music by plugging in the cable into the USB port. It says "Device unreadable" or something like that. I spoke to a MB parts guy and he mentioned that they wouldn't be able to add in an aux port after the fact due to wiring or some excuse and that if they did it would be too expensive for what it does. He said maybe checking in with an aftermarket audio shop instead. 
Member
Joined: Aug 2015
Posts: 113
Likes: 25
From: Washington State
2013 GLK 350 4Matic
I have a 2015 GLK350 and it also only has the USB port in the center console and no port in the glovebox for the MB multimedia interface. So I'm stuck without an AUX port but it's ok since I mainly use Bluetooth. On top of that I can't get any device (Android or Apple) to play music by plugging in the cable into the USB port. It says "Device unreadable" or something like that. I spoke to a MB parts guy and he mentioned that they wouldn't be able to add in an aux port after the fact due to wiring or some excuse and that if they did it would be too expensive for what it does. He said maybe checking in with an aftermarket audio shop instead.
My 2013 GLK came with two connectors in the console. One is a USB port, the other supports Apple and standard audio from a headphone jack on your music device. My car has a two-headed cable plugged into the second connector. One branch supports Apple 30 pin data cable for earlier iPods and iPhones, the other hooks to a mini-plug that work with most music players and headphone outputs.
You can also get an adapter that works with the USB port and converts it to Apple data connector. You can find the adapter on Amazon or Ebay by searching on Mercedes USB to Apple connector. I believe that Mercedes used to carry the two-headed adapter cable. Note sure of the parts number, but if you search the forum, I recall someone posted information on that cable a few years ago.
Good luck.
Thread Starter
Newbie
Joined: Dec 2019
Posts: 14
Likes: 3
GLK 250
I was finally able to take my door panel off and check the wiring on my GLK. I unplugged the wiring from the window buttons and plugged back in, no power. I removed the wiring harness altogether and made sure it was seated correctly into the connector and into what I assume it the canbus module in the door. No power. I unplugged again and checked for voltage with a meter - there was power on the wires. Well, I thought, maybe I have to replace the door and mirror buttons. I plugged the cable back in, the buttons lit up and started working lol. It looks like third time the charm!
Now let's hope it keeps working
Now let's hope it keeps working
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Junior Member
Joined: Jun 2023
Posts: 30
Likes: 7
2015 GLK 350 4MATIC, 2017 INFINITI Q60
My turn to sort the window/mirror master switch...
After inadvertently activating the keyless-go feature and rolling down all of the windows, the master window/mirror switch on the driver's side door stopped working. Maybe a coincidence but ****ty all the same. Looks like I get to learn how to remove the door panel this weekend and start poking around 
. At least the mirrors don't need adjusting...
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Member
Joined: Oct 2020
Posts: 183
Likes: 41
From: Ottawa, Ontario
2013 GLK350 Canada
Some thoughts on window switches miraculously starting to work again after pulling off and reconnecting the cable - could be a couple of things....
If the connector pin doesn't grip tightly, it needs to be squeezed a bit to ensure it grips on the switch... but you likely need a pin removal tool to get it out of the connector header. Try re orienting the wire so it stays connected. I know - Magyvering.
If it's slight corrosion, disconnecting and reconnecting will push the guck out of the way but will likely happen again - especially in a corrosive environment like sea air. Needs cleaning and antifouling coating in that case.
Can also test the switch connections with a multimeter. Look for resistance when a connection activates between pins. There shouldn't be any as each connection within the switch housing is just a simple off/on connection (going from my experience with testing switches in an older model). If it's a poor connection, needs switch replacement. I used to take the switches apart on my old 190E to clean them
Your mileage may vary, but that's part of the fun, isn't it?
- loose crimp of connector onto wire
- Connector not gripping pin on switch tightly
- Slight corrosion between connector and pin on switch
- Worn (defective) switch
If the connector pin doesn't grip tightly, it needs to be squeezed a bit to ensure it grips on the switch... but you likely need a pin removal tool to get it out of the connector header. Try re orienting the wire so it stays connected. I know - Magyvering.
If it's slight corrosion, disconnecting and reconnecting will push the guck out of the way but will likely happen again - especially in a corrosive environment like sea air. Needs cleaning and antifouling coating in that case.
Can also test the switch connections with a multimeter. Look for resistance when a connection activates between pins. There shouldn't be any as each connection within the switch housing is just a simple off/on connection (going from my experience with testing switches in an older model). If it's a poor connection, needs switch replacement. I used to take the switches apart on my old 190E to clean them
Your mileage may vary, but that's part of the fun, isn't it?
Junior Member
Joined: Jun 2023
Posts: 30
Likes: 7
2015 GLK 350 4MATIC, 2017 INFINITI Q60
I took the door panel off, unplugged the wiring from both the window module and the module in the door, plugged back in, viola - windows & mirrors are working again. Fingers crossed this lasts a while.
I suspect the window tint guys may have loosened one of the connections while they had the door apart.
Thanks to all for your help!
I suspect the window tint guys may have loosened one of the connections while they had the door apart.
Thanks to all for your help!
MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Senior Member
Joined: Feb 2020
Posts: 490
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From: Lac Ste. Marie, Quebec
2006 Alfa Romeo Brera, 2010 GLK350, 2018 BMW 640i GT, 1997 Subaru SVX, 2012 Moto Guzzi Norge GT8V
Usually they don't take the door apart to do window tint. Just a coincidence likely.
Junior Member
Joined: Jun 2023
Posts: 30
Likes: 7
2015 GLK 350 4MATIC, 2017 INFINITI Q60
Yes but it didn't occur to me as the windows were tinted several weeks before the problem started.
Regardless, I'm happy it was an easy fix. I typically break two other things while trying to fix something so I'm taking the win
