Hissing sounds and bubbles coming into brake reservoir.
- Thread starter nikgorbs
- Start date
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Provide no one, is pumping brake pedal during video. Replace the whole brake master ASSY.
Why:
Appears a seal within master, is failing. This is a none replaceable seal. The condition will worsen with use. It will be more prevalent, first drive of day until fluid an seals warm up. It will also be more prevalent on cold days. Anything done to increase pressure, will also make worst. i.e. increase voltage to booster motor, or replace booster motor, pump and or accumulator.
This failing seal, is allowing fluid passes seal. Which is a loss of fluid pressure. The system works overtime to correct pressure loss. The booster's motor commutator and or brushes, will wear out prematurely. From excessive long run times of motor. At some point, booster motor will fail to run.. Resulting in, no brake assist pressure. You'll get a brake alarm while driving, if working. DTC will indicate low booster pressure.
You can test alarm. IG Key ON. Pump brake pedal rapidly, alarm will come on.
By counting pumps until audible alarm and dash warm lights. Gives clue to health of brake booster system. More pumps, the better.
Further clues seals failing:
I see signs, reservoir screens clogged. Which is sign, brake fluid not properly cared for over vehicle life. Which reduces life of seals within the system.
Why:
Appears a seal within master, is failing. This is a none replaceable seal. The condition will worsen with use. It will be more prevalent, first drive of day until fluid an seals warm up. It will also be more prevalent on cold days. Anything done to increase pressure, will also make worst. i.e. increase voltage to booster motor, or replace booster motor, pump and or accumulator.
This failing seal, is allowing fluid passes seal. Which is a loss of fluid pressure. The system works overtime to correct pressure loss. The booster's motor commutator and or brushes, will wear out prematurely. From excessive long run times of motor. At some point, booster motor will fail to run.. Resulting in, no brake assist pressure. You'll get a brake alarm while driving, if working. DTC will indicate low booster pressure.
You can test alarm. IG Key ON. Pump brake pedal rapidly, alarm will come on.
By counting pumps until audible alarm and dash warm lights. Gives clue to health of brake booster system. More pumps, the better.
Further clues seals failing:
I see signs, reservoir screens clogged. Which is sign, brake fluid not properly cared for over vehicle life. Which reduces life of seals within the system.
- Thread starter
- #3
Okay with that being said. Is there any good affroable options to go with? Like a remanufactured assembly on eBay or is buying from Toyota the only option?Provide no one, is pumping brake pedal during video. Replace the whole brake master ASSY.
Why:
Appears a seal within master, is failing. This is a none replaceable seal. The condition will worsen with use. It will be more prevalent, first drive of day until fluid an seals warm up. It will also be more prevalent on cold days. Anything done to increase pressure, will also make worst. i.e. increase voltage to booster motor, or replace booster motor, pump and or accumulator.
This failing seal, is allowing fluid passes seal. Which is a loss of fluid pressure. The system works overtime to correct pressure loss. The booster's motor commutator and or brushes, will wear out prematurely. From excessive long run times of motor. At some point, booster motor will fail to run.. Resulting in, no brake assist pressure. You'll get a brake alarm while driving, if working. DTC will indicate low booster pressure.
You can test alarm. IG Key ON. Pump brake pedal rapidly, alarm will come on.
By counting pumps until audible alarm and dash warm lights. Gives clue to health of brake booster system. More pumps, the better.
Further clues seals failing:
I see signs, reservoir screens clogged. Which is sign, brake fluid not properly cared for over vehicle life. Which reduces life of seals within the system.
Your in luck. Sale starts in 2 days:
autoparts.toyotaofdecatur.com
Sales happen 3 to 6 times a year. They've lasted ,1 to 2 weeks generally.
Eric at Toyota of Decatur. Is the only Toyota parts guy I know of, that takes the time to repack. Even front drive shafts (CV) and rack & pinions come undamaged.
Looks like I need to make room for more parts!...
Use your VIN# here to find parts number www.partsouq.com
Also, make sure to input VIN, at Toyota web portal during checkout. The 2000 year was a split year, on a sensor wire housing plug style. It's only year with two different brake master in USA market.
You can save with ebay remain or even a used form parts rigs. Used will be 25 years old and will not likely last long.
Since so called remanufactures. Haven't shown any evidence they can or do replace these non replaceable seal. They'll likely, not last long.
Bit the bullet once, care for properly. Get another 25 years or more.
Genuine Toyota Parts and Accessories: Official Online Store Serra Toyota of Decatur
Find genuine Toyota parts and accessories that fit your Toyota. Your source for everything from batteries and floor mats to body panels and engine gaskets.
autoparts.toyotaofdecatur.com
Sales happen 3 to 6 times a year. They've lasted ,1 to 2 weeks generally.
Eric at Toyota of Decatur. Is the only Toyota parts guy I know of, that takes the time to repack. Even front drive shafts (CV) and rack & pinions come undamaged.
Looks like I need to make room for more parts!...
Use your VIN# here to find parts number www.partsouq.com
Also, make sure to input VIN, at Toyota web portal during checkout. The 2000 year was a split year, on a sensor wire housing plug style. It's only year with two different brake master in USA market.
You can save with ebay remain or even a used form parts rigs. Used will be 25 years old and will not likely last long.
Since so called remanufactures. Haven't shown any evidence they can or do replace these non replaceable seal. They'll likely, not last long.
Bit the bullet once, care for properly. Get another 25 years or more.
Last edited:
GTV
SILVER Star
There’s a guy by the name of Andy Lee who rebuilds them. I’m not sure if he’s on mud but can be found on FB.
Any of the SLC dealers could get one, doubt they'd have them on the shelf.
GTV
SILVER Star
Sorry I don’t, not on FB anymore.
Re-read this from 2001LC above before proceeding with a "rebuilt" assembly:
"Since so called remanufactures. Haven't shown any evidence they can or do replace these non replaceable seal. They'll likely last long either"
I corrected typo: "NOT"
Since, so called remanufactures. Haven't shown any evidence they can or do, replace these non replaceable seal. They'll likely, "not" last long.
2000 (08.1999 to 01-2000) brake master, had the "A" type pressure sensor.
Someone in ih8mud, IIRC. Did swap, pressure sensors "B" with older "A" or they swap wire harness housing block. Anyone, have link to that thread.
@nikgorbs, If no one links to that thread, or you can't find it. Perhaps start a new thread asking, if possible to swap.
Other options:
I've, an occasion. Where proper brake booster with master (the whole deal), wasn't available! So I bought booster ASSY and master cylinder ASSY, separately. Then put them together. Not the most cost effective, but gets the job done.
Looking at below listing at Serra of Toyota Decatur, AL. Diagram, shows the two different sensors A & B type. Link, is for master only (no booster ASSY). They shows available. Sale starters tomorrow, free shipping and 25% off, the wholesale price shown. Use your VIN on check out. May also be good idea, to call Eric at Decatur, in parts. Mention the "A" type (flat blade wire harness hook-up) and my name if needed (Paul in Denver). Eric has my number, he can call me if needed.
autoparts.toyotaofdecatur.com
Here's booster ASSY
autoparts.toyotaofdecatur.com
Option:
It "MAY" also be, possible the newer late 2000 -2002 master with B type. "MAY" also work by swapping to A type. But I've not done this, so I can't confirm.
Even the 03-07 Master "MAY" work. But I've not done the swap, so I can't confirm.
Someone in ih8mud, IIRC. Did swap, pressure sensors "B" with older "A" or they swap wire harness housing block. Anyone, have link to that thread.
@nikgorbs, If no one links to that thread, or you can't find it. Perhaps start a new thread asking, if possible to swap.
Other options:
I've, an occasion. Where proper brake booster with master (the whole deal), wasn't available! So I bought booster ASSY and master cylinder ASSY, separately. Then put them together. Not the most cost effective, but gets the job done.
Looking at below listing at Serra of Toyota Decatur, AL. Diagram, shows the two different sensors A & B type. Link, is for master only (no booster ASSY). They shows available. Sale starters tomorrow, free shipping and 25% off, the wholesale price shown. Use your VIN on check out. May also be good idea, to call Eric at Decatur, in parts. Mention the "A" type (flat blade wire harness hook-up) and my name if needed (Paul in Denver). Eric has my number, he can call me if needed.
Brake Master Cylinder Sub-Assembly with Solenoid #47025-60041 | Autoparts.toyota.com
Boost your vehicle's safety with our Brake Master Cylinder Sub-Assembly with Solenoid. Shop Genuine Toyota parts now!
autoparts.toyotaofdecatur.com
Here's booster ASSY
Brake Booster Pump Assembly with Accumulator #47070-60010 | Autoparts.toyota.com
Ensure optimal brake performance in your Toyota with our Brake Booster Pump Assembly with Accumulator. Shop Genuine Toyota parts now!
autoparts.toyotaofdecatur.com
Option:
It "MAY" also be, possible the newer late 2000 -2002 master with B type. "MAY" also work by swapping to A type. But I've not done this, so I can't confirm.
Even the 03-07 Master "MAY" work. But I've not done the swap, so I can't confirm.
- Thread starter
- #12
Alright so I tried ordering the part from Toyota and Lexus my part number is 47050-60041 and it’s discontinued. I tried joining that Facebook group, but they keep denying me. My only real option is to rebuild it myself or if I can somehow get in contact with Andy Lee on Facebook and go through that process.
Or if anyone knows if my 47050-60041 was superseded by another part number that is also computable please let me know. My brakes still work but I don’t want to wait until they eventually completely give out.
Or if anyone knows if my 47050-60041 was superseded by another part number that is also computable please let me know. My brakes still work but I don’t want to wait until they eventually completely give out.
Last edited:
I gave you option above. I also gave @nicksal same info. He sent me a thank you DM saying: "Just wanted to thank you for the replies and advice! I was able to find the 60041 part by calling some local dealers so they did have access to some inventory I couldn't find online. Install was relatively straightforward and brake feel is more improved than I was expecting so that's a plus! Thanks again for your help!"
Here, I'll lay out again
You've other option:
A type pressure sensor only use first 1/2 2000.
Here, I'll lay out again
You've other option:
- Call around to different Toyota & Lexus dealership in different parts of USA. Many will show not available online, since many will not ship. Southeast Toyota does show in.
- Buy master and booster ASSY, separately. Put them together to make the whole ASSY. Check www.partsouq.com and or your local dealerships. For part number of just master w/o booster ASSY. All booster ASSY are the same.
- Buy new master with B type (triangular) pressure sensor. Swap in your A type. I've not done this, so can say for sure it will work.
- Buy new master with B type (triangular) pressure sensor. Swap wire hosing block to B type. I've not done this, so can say for sure it will work. Look on wire housing block for 5 digit number (suffix). Add that to prefix 90980-*****
A type pressure sensor only use first 1/2 2000.