benblaze91
Seat Altea Diesel Brake Booster Sensor Issue
Summary of the thread
A 2012 Seat Altea diesel with nearly 200,000 km was experiencing brake issues, specifically with the brake booster pressure sensor, leading to error messages and weak brakes. The problem was identified as potentially caused by incorrect brake system bleeding, which can trap air and affect pressure readings. The solution involved replacing the faulty sensor and ensuring the brake system was properly bled, resolving the issue and restoring vehicle safety.
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4 comment(s)
benblaze91 (community.author)
Implausible signal is exactly what the diagnostic tools showed! Stopping distances seem longer, and the brake pedal feels a bit harder to push. What do you mean by ABS system?
wernerschneider8
Yes, ABS or Anti-lock Braking System. If the system was bled incorrectly, air can get trapped. This affects pressure readings and can trigger the sensor fault. Replacing the sensor is necessary, but confirm the bleeding issue is resolved, or the problem will return. It impacts vehicle safety. Consult with a workshop.
benblaze91 (community.author)
You nailed it! Turns out the brake system bleeding was botched after some work. A new brake booster pressure sensor and a proper bleed cost me 90€, but vehicle safety is important. Back to normal now!
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SEAT
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ALTEA
wernerschneider8
Faulty brake booster pressure sensors aren't uncommon. Has the ABS system been throwing any codes related to implausible signals? Are you experiencing longer stopping distances, or is the brake pedal feeling different?