Brake bleeding question
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Junior Member
Joined: May 2014
Posts: 50
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From: North Shore of Lake Ontario
2011 Porsche 997.2, 2015 GLK250, 2009 Sierra 2500HD Diesel
Brake bleeding question
Has anyone here flushed brake fluid on a 2015 GLK? Any issue using a vacuum instead of pressure?
I completed most of the B0 service today on my wife's 2015 GLK250. Oil, filter, cabin filter, air filter, checked fluids, added DEF. I still need to change brake fluid, and I'll do that in a week or 2 when I take off the snow tires.
I have both a Motive pressure bleeder and vacuum pump but generally prefer vacuum as there less chance of a leak spraying brake fluid around under pressure.
Comments?
I completed most of the B0 service today on my wife's 2015 GLK250. Oil, filter, cabin filter, air filter, checked fluids, added DEF. I still need to change brake fluid, and I'll do that in a week or 2 when I take off the snow tires.
I have both a Motive pressure bleeder and vacuum pump but generally prefer vacuum as there less chance of a leak spraying brake fluid around under pressure.
Comments?
Member
Joined: Mar 2017
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From: Toronto, Canada
2010 GLK350 4matic
I did it with the mityvac vacuum, it took a while to do it this way, fluid was flowing very slow, i think next time im going to use pressure. Plus the old fluid looked almost identical to the new (both MB fluid), I think a different color fluid would have made think much easier too.
Thread Starter
Junior Member
Joined: May 2014
Posts: 50
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From: North Shore of Lake Ontario
2011 Porsche 997.2, 2015 GLK250, 2009 Sierra 2500HD Diesel
Thanks SAVZ. I did the job yesterday, using my Motive pressure pump. No issues encountered.
I agree about the colour difference, or lack of difference. The wife's GLK is about 22 mo old, and 55,000km so the old brake fluid still looked like new. I miss the old ATE Super Blue brake fluid. Alternating between the Super Blue and the regular amber Typ 200 really showed clearly when you'd pushed the old fluid through with new.
I agree about the colour difference, or lack of difference. The wife's GLK is about 22 mo old, and 55,000km so the old brake fluid still looked like new. I miss the old ATE Super Blue brake fluid. Alternating between the Super Blue and the regular amber Typ 200 really showed clearly when you'd pushed the old fluid through with new.
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From: Bellevue, WA
2013 GLK250 Bluetec & 2014 E550 Cabriolet
I remember that I have read a post in somewhere (can't find it now) that newer MB models need Xentry (or MB-specific OBD II scanner) to command car computer to flush the whole brake fluid. Is it true? Mine is 2013 GLK250 and thinking to bleed it soon and wondering if the old school method would be okay with it.
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
To bleed the system after something like a caliper change, you should be able to do it the "conventional" way. If you want to flush the system of all old fluid you need to be able to trigger the ABS system.
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From: Bellevue, WA
2013 GLK250 Bluetec & 2014 E550 Cabriolet
Hmm that sounds like we should go to dealership service or MB-specialized shop for brake bleeding… like for changing transmission oil? I don’t think that local brake/muffler shop would follow the right process for ABS (or even don’t have a device to activate ABS).
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
No, not that I am aware of.
Don't confuse bleeding, which is unchanged from the advent of hydraulic brakes, with flushing or changing the fluid. To get all the old fluid out you need a way to activate the ABS module. I should think that any independent business that services Mercedes on a regular basis would be able to do this. Also, I would expect at least some of these DIY scanner systems could also do it.
Don't confuse bleeding, which is unchanged from the advent of hydraulic brakes, with flushing or changing the fluid. To get all the old fluid out you need a way to activate the ABS module. I should think that any independent business that services Mercedes on a regular basis would be able to do this. Also, I would expect at least some of these DIY scanner systems could also do it.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Traction control utilizes ABS, and yes, if it activates that will circulate the fluid. If you have snow and/or ice available you can activate it yourself...
