Last night, driving down a hill, I applied the brake gently, and suddenly the RSC light activated, and the brake pulsed. Then shortly after, on a straightaway, coming up to a light I applied the brake, and it pulsed again.

It was a bit unsettling, but didn't lose control or anything.

I had a similar issue on a BMW a few years ago, and the solution was to replace the Yaw sensor.

Any idea which sensor is out on the Expy? How would i find out?

Thanks.

 

I had a similar issue on my 07 EL Lim. Turns out it was an alignment and the steering wheel angle sensor. The sensor was $70 and was held onto the underside of the steering column with a couple of bolts. Very easy fix. It was not the YAW sensor