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Old 01-20-2011, 01:23 AM
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Question Funky brake pedal feel, dealer stumped, anyone else have this issue?

Hey all.

Background (the long part):

My WK2 has about 4000 miles on it. At about 3000 the brake pedal started getting mushy. It eventually got to the point where if you held hard pressure on it (as in stopped at a light on a very steep hill) or feathered it (repeated incresing presses), it would eventually make it to the floor. I finally took it in and the dealer replaced the master cylinder. Well that helped only a little bit. I took it back and they put in a Star request (i.e. Help us we don't know) back with the Chrysler engineers and they ended up replacing the ABS and hydraulic control modules as well as suction and pressure bleeding the entire system. It is better now but it still doesn't feel 100% because I can still get the pedal to the floor, it however takes longer and more pressure than before.

Currently the vehicle stops fine and feels safe. Yet I am not sure a vehicle this new should feel like this or if it is an indicator of a larger issue. The mechanic gave me a general description of the system and it is far more complicated than say my 93 F150 with all the traction control and ABS components. Hence I'm a little suspicious of the issue.

Question (the easy part):

Does anyone else have a similar issue where the pedal will make it to the floor?

Does your WK2 pedal have more stroke than other vehicles?

Thanks in advanced.
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Old 01-20-2011, 02:01 AM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

I know the first time I went from >60 to a dead stop it took longer to stop than I expected, with more pedal travel than I'm familiar with. But my other rides are a light duty F150 and a Toyota Corolla. So I chalked it up to the Jeep weighing in at 5000lbs.

If I am on level ground I can keep hard pressure on it and force it to the floor, but it takes much less pressure to just keep the vehicle from forward movement.

Are you doing a lot of emergency stops perhaps? Are you heavy in the gas? What happens while sitting at a stop light on level ground?

Also, do you have a 4X4,do you have Select Terrain, and if so have you tried duplicating the problem in another mode like sport?
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Old 01-20-2011, 08:50 AM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

Quote:
Originally Posted by Sir Bean View Post
Hey all.

Background (the long part):

My WK2 has about 4000 miles on it. At about 3000 the brake pedal started getting mushy. It eventually got to the point where if you held hard pressure on it (as in stopped at a light on a very steep hill) or feathered it (repeated incresing presses), it would eventually make it to the floor. I finally took it in and the dealer replaced the master cylinder. Well that helped only a little bit. I took it back and they put in a Star request (i.e. Help us we don't know) back with the Chrysler engineers and they ended up replacing the ABS and hydraulic control modules as well as suction and pressure bleeding the entire system. It is better now but it still doesn't feel 100% because I can still get the pedal to the floor, it however takes longer and more pressure than before.

Currently the vehicle stops fine and feels safe. Yet I am not sure a vehicle this new should feel like this or if it is an indicator of a larger issue. The mechanic gave me a general description of the system and it is far more complicated than say my 93 F150 with all the traction control and ABS components. Hence I'm a little suspicious of the issue.

Question (the easy part):

Does anyone else have a similar issue where the pedal will make it to the floor?

Does your WK2 pedal have more stroke than other vehicles?

Thanks in advanced.
The brake pedal should not be as soft as you describe. The WK2 brakes are very hard to bleed correctly. Your dealer must follow the description in the manual exactly - even though it goes against conventional bleeding methods. I would suggest having them bleed the brakes again with a pressure bleeder and the brake pedal pumping described in the service manual.
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Old 01-20-2011, 01:27 PM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

If I am on level ground I can keep hard pressure on it and force it to the floor, but it takes much less pressure to just keep the vehicle from forward movement.
----(Sound similar to mine)

Are you doing a lot of emergency stops perhaps? Are you heavy in the gas? What happens while sitting at a stop light on level ground?
----(No. It stops normally with decent pressure, but if I keep my foot on it with heavy pressure it will eventually make it to the floor, time is 7-10 seconds)

Also, do you have a 4X4,do you have Select Terrain, and if so have you tried duplicating the problem in another mode like sport?
----(Will have to try different settings, mine is an 4wd Overland)
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Old 01-20-2011, 01:29 PM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

"I would suggest having them bleed the brakes again with a pressure bleeder and the brake pedal pumping described in the service manual."

---- The dealer did a procedure explained from the Star department, which took 3 people. They Suction and pressure bled it 3 times.
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Old 01-20-2011, 03:16 PM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

Also, not sure if you've driven more than one WK2, so next time you go to the service dept. you might have a salesperson give you the keys to another and drive it to compare.
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Old 01-20-2011, 03:20 PM
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Re: Funky brake pedal feel, dealer stumped, anyone else have this issue?

I would ask them to check for a vacuum leak. The master cylinder needs vacuum to operate and if you are having the pedal go to the floor it sounds like you are loosing vacuum.
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