evamond10
Twizy ABS Fault
Summary of the thread
A 2019 Renault Twizy is experiencing an ABS fault, with the ABS light constantly on, rendering the system ineffective. The diagnostic scan indicates a fault with the lateral acceleration sensor, leading to suspicions of a failing control unit. Possible causes include issues with the steering angle sensor or wheel alignment, which could affect sensor readings. The recommended solution is to consult a workshop specializing in Renault electrics for a thorough diagnosis and potential repair of the control unit.
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4 comment(s)
evamond10 (community.author)
Steering angle, huh? Interesting. I haven't specifically checked that. Is there an easy way to test that without specialized tools? As for wheel alignment, nothing recently, but it's always a possibility. What makes you think that could be connected? Where does the ABS get its alignment data from?
christophersturm12
The ABS and ESC systems rely on many sensor inputs to work together. A faulty steering angle sensor can definitely confuse the system, making it think the car is turning more or less sharply than it actually is. Regarding the wheel alignment, it’s just a thought, since extreme misalignment might influence the lateral acceleration sensor readings indirectly. Honestly, this sounds like a complicated issue. With those symptoms, I’d strongly recommend booking it in with a workshop specializing in Renault electrics. I have seen these control units failing before, costing around 1000€ to repair.
evamond10 (community.author)
Thanks for the insight; I suspected as much. The info on the steering angle sensor is helpful, but it all points to a deeper dive. I'm off to the shop. The diagnostic scan indicates a defective control unit. I have requested a quote from the garage.
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RENAULT
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TWIZY
christophersturm12
A lateral acceleration sensor fault on a Twizy is tricky. Have you checked the basics first? Is your steering angle sensor working correctly? A bad reading there can sometimes throw off the whole electronic stability/traction control system and cause cascading errors. Also, any recent wheel alignment work done? A wonky alignment could conceivably mess with the sensor readings, though it's a long shot.