Squishy brake pedal. But no fluid change or drain - Toyota Yaris Forums

Kaotic Lazagna · 06-19-2018, 02:04 AM

I'm going to guess some how air got into the system. Not really sure how that's possible, but a squishy brake pedal is a sign of air being in the system.

Do a brake fluid flush with some DOT3/4 fluid, and see how it feels then. It's probably due for a flush anyway. I'll be flushing mine (probably with the gravity method unless I can have someone help me by pressing on the brake pedal) soon. I've flushed it once already, but I used Torque RT700 (DOT4), but it's changed color quickly (even became a little jelly in my FR-S [sucked out and topped off with new fluid for now]). I have some Amsoil DOT3/4 waiting for both cars, just need the time to do it.

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06-19-2018, 02:04 AM	#21
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	I'm going to guess some how air got into the system. Not really sure how that's possible, but a squishy brake pedal is a sign of air being in the system. Do a brake fluid flush with some DOT3/4 fluid, and see how it feels then. It's probably due for a flush anyway. I'll be flushing mine (probably with the gravity method unless I can have someone help me by pressing on the brake pedal) soon. I've flushed it once already, but I used Torque RT700 (DOT4), but it's changed color quickly (even became a little jelly in my FR-S [sucked out and topped off with new fluid for now]). I have some Amsoil DOT3/4 waiting for both cars, just need the time to do it.