cb1111

2002 RX300 here with 35k miles (yes, driven by a little old lady (my 95 yo mother) to the grocery store). All servicing done by time.

A few years ago I got new brakes done. Several months later, the car started making intermittent noises making a right hand turn from a stop.

The noise is a short (2 second?) rattle combined with a vibration - almost feels like the ABS is kicking in. Gut feeling is that it is the right front.

It'll go for several hundred miles without any noise, then it'll do it in a row within a few miles. Always at low speed making a right hand turn from start.

About a month ago I got the P1155 code (unrelated). This was during a time that the car was driven regularly with about a thousand miles put on in a month. During this thousand miles I had the CEL and the VSC light on, but no brake noise. I was happy that the noise was gone.

I ordered the correct Denso sensor from Amazon and installed it. CEL and VSC light went away. About 5 miles later the rattle is back.

Any thoughts? TIA

carguy07

Broken reluctor ring or dirty/bad speed sensor

cb1111

Thanks. Can I assume that the more likely problem is the ABS speed sensor?

carguy07

Unfortunately a lot of times it is a broken ring.

cb1111

Crap. Any easy way to tell without racking up a huge diagnostic fee? It seems like replacing the ring is a pretty huge job.

Does the fact that it wasn't making that noise/vibration when I had the P1155 code (O2 sensor - that caused a CEL and the VSC to turn off) mea anything as far as diagnostics?

cb1111

Cleaned the sensor and it seems that the issue has gone away so I dodged a bullet.