Why no brake fluid from ABS to front driver side caliper bleeder on a 2000 toyota sienna V6 (Abs Hydraulic Unit)

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kuzman

Jun 03, 2023 - 09:25 AM

sound like a bad brake hose on drivers side.

Source: Gary retired auto Tech

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dharbin6

Jun 02, 2023 - 06:11 AM

Could be several reasons
1. bent (hard) brake line
2. ABS light on? Chances are, if your ABS light is not on, it's likely a clogged or frozen bleeder zerk.
3. if ABS is off, you've likely got a bad bleeder "zerk".

4. clogged bleeder zerk.

Possible fixes
1. Replace the bleeder zerk
2. Totally remove the bleeder zerk from the caliper. Check for presence of fluid. Assure your brake fluid receptical is full.

3. reinstall the bleeder zerk fully then slowly loosen the zerk; (at the same time) have someone depress the brake pedal as you do. (Vehicle running) be prepared to make a mess if a clog breaks loose.

4. OR take it to a local shop and have them check it.

Source: Lifelong Toyota owner. Had same problem with a 2007 Highlander. It was the zerk frozen up.

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citylimiltauto13

Jun 02, 2023 - 07:26 AM

There could be several reasons- line going to caliper could be clogged, ABS module could be bad and need to hook to computer to check, or the reservoir could be empty are just a few reasons.

Dustin Davis
City Liimit Auto Sales

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clarkrachel6969

Jun 06, 2023 - 01:47 PM

Bad break booster mabe

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BernieO

Jun 06, 2023 - 07:23 PM

You could have air in the line on that particular side. I would have the brake system flush first. This way your not guessing. The shops machine will tell you what exactly going on.

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Jay_CarParts.com

Jun 08, 2023 - 10:33 PM

Hi there,

The problem you are encountering shows a possible air vacuum inside the brake flexible hose on the front driver side. Trapped air in the brake line prevents proper flow of the brake fluid. Another cause is a clogged or blocked brake flexible hose which would impede flow of the brake fluid. The first thing to do is bleed the brake system (to remove air pockets, front and rear wheels) and check the result if the brake pedal goes back to normal operation. Try to move the vehicle forward and press the brake pedal if the brake clamps the wheel for a second. For more info about brake bleeding, click this link from our Carparts knowledge database. I hope this helps!

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divyaseo

Sep 22, 2025 - 12:16 AM

Likely causes are a clogged brake line or a stuck ABS modulator valve preventing Brake fluid flow. Check for blockages, collapsed hoses, or ABS unit faults before replacing parts.