I have a 2004 Land Cruiser w/306,000 miles, that I recently replaced the brake rotors front and back and brake pads with OEM parts. After several thousands miles I started to notice that the brake pedal would creep down while waiting at a red light. A quick pump or two would bring it right back up. Yesterday I took it to a Toyota dealer and had them do a brake fluid flush. After I picked it up everything was fine for the rest of the day. But today it started acting up again with the brake pedal creeping down at stops. There are no lights on or any warnings at all. Any ideas on what might be causing this? Thanks
2004LC Brakes - losing pedal at stops
- Thread starter 2004LC
- Start date
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Three reasons for the brake pedal to going to the floor.
1, Air in the brake lines.
2, Master cylinder internal seals worn out.
3, Leak in the brake lines.
1, Air in the brake lines.
2, Master cylinder internal seals worn out.
3, Leak in the brake lines.
That failure is a classic 'bad master cylinder' symptom. Whether you want to just fix what's broken (MC) or replace the entire booster/accumulator/MC assembly depends on your perspective and wallet thickness.
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- Thread starter
- #5
I had the Toyota dealer do a brake flush two days ago. I just went out to look at the booster pump w/master cylinder. It was filled to the top well above the max fill line. The top of the fill tank says to pump the brakes 40 times with the ignition off prior to filling the tank to the max fill line. I had my wife pump they brakes and fluid starts coming out off the tank cap within 5-10 pumps.
Yep not surprising unfortunately. You may want to return to that Toyota dealer and point out the fact that it does not even appear it was flushed by the color of the fluid in the reservoir. Or maybe send pics so you dont have to drive there. Good luck...
Thanks for the followup. I would take a photo of the fluid leaking out, write up a sheet with this story and photo, and go see the service manager at the dealer and suggest they train the techs more carefully. And whatever you paid for this 'flush' should be refunded. As @leveeguy said, your fluid should now be clear, too.
The reservoir gets stained. Thats probably fresh fluid if you were to bleed and inspect color in a clean container. This has been documented before.
- Thread starter
- #9
Thank you for your suggestion. I’m at a bit of a loss here as I went to the Toyota dealer 40 miles away because when my wife took our 2004LC into our local Toyota dealer for an oil change last year they told her that I needed all new rotors and brake pads. The rotors and brake pads had about 5,000 miles on them, that I had bought all new OEM from them. The service writer admired that he didn’t even mic them. I asked to speak to the service manager that wasn’t in. I went back the next day and she still wasn’t there.
Seems like you can write that dealer off your list. Remember - every woman who ever takes a vehicle to a shop is sold new brakes...whether she needs them nor not. 'It's for your safety, ma'am'.
2001LC
SILVER Star
I'll add:
Weak accumulator and or weak booster motor and or weak pump and or contaminated fluid not complete flushed out. I've even found, non Toyota fluid to be problematic. BTW: Most Toyota/Lexus Dealership, don't even use Toyota brake fluid. They use cheap bulk.
I'd do a few text.
How many pumps of pedal to evacuate acumulator.
How long (seconds) to charge accumulator and at what battery voltage.
Any corrosion on brake control wire.
Brakes ...... Overdue write-up.
First and foremost: Brakes should only be worked by those, with high level of mechanical abilities and experienced with brake systems. With the age of all 100 series today, in our aging fleet. Any issue, with brake master assembly. IMHO, best and safest course of action. Have the whole brake...
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