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No brakes

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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jmana
Posts: 57
Joined: 19 March 2014
Year and Model: 04 xc90
Location: North Carolina

No brakes

Post by jmana »

2004 XC90 2.5 liter. Someone cut in front of me and slammed on her brakes, which made me slam on my brakes. Ever since then my brakes have been getting worse and worse, to the point where there isn't any braking power at all and I can't drive it. I checked for codes and it said the 2 sensors on the brake booster are reading low pressure. I'm assuming the brake booster is shot. Or is there something I should look at first?
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DeadEric
Posts: 80
Joined: 17 April 2019
Year and Model: 1996 850 Turbo
Location: Minnesota
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Post by DeadEric »

I'd be more concerned about the master than the booster. Booster failure is more linked to hard pedal. Master failure is felt best with squishy pedal but double or triple pump will firm it up. If that's the case, you're seals are blown and replacement is best.

If you do it yourself, don't forget to bench bleed the master.
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cn90
Posts: 8268
Joined: 31 March 2010
Year and Model: 2004 V70 2.5T
Location: Omaha NE
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Post by cn90 »

Brake system is life-and-death issue.
Get an expert to look at it.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+
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