My mechanic tells me the brake pedal can go to the floor when braking

Tiny
DANISHDUDE
  • MEMBER
  • 2017 MAZDA MX5
  • 1.5L
  • 4 CYL
  • 2WD
  • MANUAL
  • 15,000 MILES
The car can be brought to a rapid stop (ABS activating) when applying serious force to the brakes. However, the pedal goes almost all the way to the floor (a thumbs width over the floor). It actually feels like the pedal reaches its maximum travel. I bring the car to the dealer and ask if this is supposed to happen. He says; yes, it is. Then presses the brake pedal a few time (car not moving, engine running). He says it is fine. That the brakes are supposed to feel like that. I just had the brake fluid replace by a professional, and is simply not happy with these brakes. I have never been able to push the brake pedal to the floor on any other new car. Is he right?
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Wednesday, November 8th, 2017 AT 10:48 AM

3 Replies

Tiny
KEN
  • ADMIN
The brake pedal should not go to the floor at any time. It sounds like you have some air trapped in the system and especially the ABS control valve. To bleed this system correctly you will need a ABS brake scanner that can open the valve at the time of bleeding. I would also install a new master cylinder to be safe.

Here are a couple of guides to help you get the problem fixed:

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

and

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

and

https://youtu.be/rTtAnsOlZU4

and

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Thursday, November 9th, 2017 AT 11:12 AM
Tiny
DANISHDUDE
  • MEMBER
The system has just had the brake fluid replaced replaced. So not that. I was able to drive another MX5 today. The brake was similarly soft. Apparently it is just how the system works.
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Thursday, November 9th, 2017 AT 11:27 AM
Tiny
MHPAUTOS
  • EXPERT
Can I ask why the brake fluid was replaced on a 2017 model, was there a problem, was this done at a dealer under warranty?With the engine off, and after pumping the brake pedal to expel all vacuum, do you have a high and hard pedal?
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Friday, November 10th, 2017 AT 4:22 AM

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