IIRC, the speedo only reads from the FL tone ring sensor,
but there are plenty of other failure points that can disable
ABS/TRACS resulting in those two lights.
You may have a bad sensor at one of the other three wheels,
and you can run a simple check on them with a DMM, but there's
a higher probability that you have bad solder joints in the module.
The SEW switch selects different shift points in the TCU.
Long highway drives shouldn't care what you use. Once
you hit highway speeds, you're pretty much in 4th.
W is NOT recommended as it starts the car in a higher gear
to reduce torque, but puts more strain on the tranny. W Bad...
If you value the added safety of ABS, Fix It. Cheap insurance!
And you won't know when you really need it until you REALLY need it.
And Matty at MidWest is the Man.
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