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Old 06-17-2021, 12:30pm   #1
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Default Stiff brake pedal etiology
Ok smarty pants. Solve this automotive issue.

2015 SRX has a tight brake pedal. It seems to only occur when it has been parked in the summer heat 95+

Car will brake but pedal barely moves and is very stiff/tight. When the brakes are applied and the vehicle is at a complete stop the car does not need the brake pedal pressed. It will remain at a stop until you press the gas

When temps cool, brake pedal back to normal.

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Old 06-17-2021, 12:35pm   #2
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Bad slave cylinder?
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Old 06-17-2021, 12:50pm   #3
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Originally Posted by C3C7NIC View Post
Ok smarty pants. Solve this automotive issue.

2015 SRX has a tight brake pedal. It seems to only occur when it has been parked in the summer heat 95+

Car will brake but pedal barely moves and is very stiff/tight. When the brakes are applied and the vehicle is at a complete stop the car does not need the brake pedal pressed. It will remain at a stop until you press the gas

When temps cool, brake pedal back to normal.








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I had the same problem. Had my cup holder replaced and it fixed the problem
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Old 06-17-2021, 12:50pm   #4
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Quote:
My 2011 SRX has a tight brake pedal after about 3 miles of driving. It seems
to only occur when it has been sitting all day in the summer heat. When the
brakes are applied and the vehicle is at a complete stop the car does not
need the brake pedal pressed. It will remain at a stop until you press the gas
and then a grinding noise occurs...
https://www.cargurus.com/Cars/Discus...2403_ds1038967
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Old 06-17-2021, 12:51pm   #5
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Originally Posted by bill_daniels View Post
Bad slave cylinder?



Aren't they having a Holiday for that?
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Old 06-17-2021, 1:01pm   #6
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Stuck caliper(s). Pads don't retract sufficiently, so not much pedal motion needed. Just a guess, based on actual experience though.
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Old 06-17-2021, 2:13pm   #7
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Aren't they having a Holiday for that?
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Old 06-17-2021, 2:28pm   #8
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Originally Posted by Stevedore View Post
Stuck caliper(s). Pads don't retract sufficiently, so not much pedal motion needed. Just a guess, based on actual experience though.
Yep. I would start with the calipers. Several parts need cleaned and lubricated when doing a proper brake job. Caliper slide pins,etc...also could be a weak or damaged brake hose...warped disc...several things to check out.

You really need to get the entire brake system checked out by a pro.
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Old 06-17-2021, 3:50pm   #9
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I had a proportioning valve go bad and do something similar but I'm with others in suggesting the whole system be gone through, brakes being kind of important. #BrakesLivesMatter
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Old 06-17-2021, 4:01pm   #10
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Originally Posted by bill_daniels View Post
Bad slave cylinder?
Your post has been flagged as being in violation of community standards.

~ All the best
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Old 06-17-2021, 4:40pm   #11
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Candy
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I had the same problem. Had my cup holder replaced and it fixed the problem


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Old 06-17-2021, 6:13pm   #12
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Move to cooler climate….
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Old 06-17-2021, 7:56pm   #13
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Over 40 years of working on cars, restoring cars and building cars and never, not once, have I used or heard the word “etiology” associated with cars.
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