josephjung7

Seat Altea ABS Fault Lateral Acceleration Sensor

My 2011 Seat Altea with a gasoline engine keeps throwing up an ABS light and the whole ABS system is buggered. Plugged it into a diagnostic tool, and it's showing a fault with the lateral acceleration sensor. Apparently, the 'affected control unit' is defective. My mechanic reckons it'll be around 1000€ to fix! Anyone else had this yaw rate sensor issue? Is it definitely the electronic control unit? This electronic stability fault is a proper safety warning and needs sorting!

A 2011 Seat Altea is experiencing an ABS fault related to the lateral acceleration sensor, with a diagnostic tool indicating a defective control unit. The issue is causing the ABS system to malfunction, raising safety concerns. A suggestion was made to check the wiring and connections to the sensor, as corrosion could be a simpler cause. Ultimately, the problem was resolved by replacing the faulty yaw rate sensor and electronic control unit, restoring the ABS and electronic stability functions.

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Lateral sensor fault on a Seat Altea? ABS light coming on? Sounds familiar. Had something similar happen with my old Volvo V70. Electronic stability system went haywire. The yaw rate sensor was the culprit there too. Before you jump to replacing the whole control unit, have you checked the wiring and connections to the sensor itself? Sometimes it's just a corroded connector causing the issue.

Wiring, huh? Where exactly is this yaw rate sensor located? And how difficult is it to check the connections myself? I'm no mechanic, but I'm not afraid to get my hands a little dirty.

Okay, so the Volvo's yaw rate sensor was under the driver's seat. I'm not 100% sure about the Altea, but it's likely in a similar location, possibly under the center console or a seat. Accessing it might involve removing the seat. Check your car's repair manual or a forum specific to Altea for exact location. Honestly, if you're not comfortable with auto electrics, I'd suggest taking it to a proper workshop. A faulty sensor can mess with the ABS and electronic stability programs, and you don't want to compromise safety. The diagnostic tool is pointing to the control unit, and it is a common failure.

Thanks a bunch for your help! I took it to a workshop as you suggested. Turns out, the yaw rate sensor was indeed faulty. They replaced the electronic control unit and did some calibration. Cost me around 1000€, ouch! But at least the ABS and electronic stability are working again. Massive relief to get rid of that safety warning!

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SEAT

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ALTEA