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Problem after 4inch lift kit install (Spongy brake)

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Old Aug 29, 2022 | 01:09 AM
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RainWongG63's Avatar
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W463 G63
Problem after 4inch lift kit install (Spongy brake)

Hey there, Just install the 4inch lift kit (from Jackoverland) with my 2014 W463 G63, two problems come out,
1.Since the stock brake line is too short, have to replace it, After the extension brake line installed with the brake fluid washed,The brake pedal feels totally different as before, much way too Spongy, need press the pedal all the way deep to stop the car,I'm sure there's no air in the brake line since they double washed the brake fluid,
2.Blind spot assist inoperative message showing on the instrument,
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Old Aug 29, 2022 | 09:05 AM
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G63, G65
Originally Posted by RainWongG63
Hey there, Just install the 4inch lift kit (from Jackoverland) with my 2014 W463 G63, two problems come out,
1.Since the stock brake line is too short, have to replace it, After the extension brake line installed with the brake fluid washed,The brake pedal feels totally different as before, much way too Spongy, need press the pedal all the way deep to stop the car,I'm sure there's no air in the brake line since they double washed the brake fluid,
2.Blind spot assist inoperative message showing on the instrument,
Spongy brakes is almost always air in the line. I know you said the fluid was "double washed", but there has to be an air bubble somewhere. Try bleeding them again. Have you checked the connections on the new brake lines to make sure they aren't leaking anywhere?

Blind spot issue is most likely from the sensor being higher. I have had that go away after awhile on a couple of lifted G63s, and I've had it stick around for a long time as well. I don't know if there is a true solution or not (ie, software update/correction).
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Old Nov 27, 2022 | 02:52 AM
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G63 AMG
Did you order the extended brake lines from Jackwagon?
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Old Nov 27, 2022 | 12:49 PM
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Built 2008 G55 & one big 80 Series LandCruiser !
On my 4" lift install with the JWO lines the master Cyl decided it had enough after 100k miles, suspect seals failed on pressure bleeding.... drivable to get her home but not for DD....... have a new Master getting put in tomorrow as we button her up.

Not sure where you are, but it's possible the error could be coded out or function turned off with the right specialist.... Eurocharged or FMU or Eurowise might have suggestions.. FMU did wonders for my old RS6 build that several local shops couldn't sort... and EC has been able to keep most of the nannies from lighting up on my Merc builds...

E
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Old Dec 1, 2022 | 01:55 AM
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I believe I know who this is and I just shot you an email to talk through things. Didn't see this thread until now but hopefully we can get you taken care of if you haven't already gotten things lined out.
If you did not receive an email from me, shoot me an email at JackWagonOverlanding@gmail.com and we can troubleshoot.
Thank you!
Jack
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