Mustang Mach-E ABS Traction Problems

The symptoms you describe, particularly the ABS light and traction issues, strongly suggest a problem with the ABS system itself or its communication with the ECM (Engine Control Module). The ECM is essentially the car's computer and a fault there can cause many issues. A defective wheel speed sensor can also cause similar problems, as the ABS relies on these sensors to function correctly. Has the vehicle had any recent work done on the braking system or suspension?

No recent work, but could a speed signal fault from a defective control unit really cause all these symptoms? I'm trying to understand why the traction control would be affected if it's just a speed sensor issue. Is there a way to confirm the defective control unit before replacement?

Yes, a speed signal fault originating from a defective ABS control unit can indeed cause all the symptoms you're experiencing. The traction control system relies on the ABS to detect wheel slip. If the ABS is providing faulty speed data, the traction control will also malfunction. To confirm the defective control unit, a diagnostic scan using appropriate equipment is necessary. The diagnostic tool can read the fault codes stored in the ABS module and pinpoint the issue to the control unit. However, ABS diagnostics can be tricky, so I would recommend taking it to a qualified workshop.

Thanks for the detailed explanation and advice. I took it to a workshop, and after the diagnostic scan, it turned out to be exactly what you said. Affected control unit defective, costing 1000€. I appreciate your help in narrowing down the issue.