I am slowly giving my newly purchased car a complete detailed inspection and want to ID a few parts.

The left rear wheel area has a few components that I do not know what they are. Can someone please ID?

To the right of the drive shaft you can see a cable? going in to the hub. What is this? The pic is taken so that the right side is the front of the car, and the left side is the rear of the car. The second pic is taken from the front looking toward the rear of the car. I have no idea what this bracket mechanism does...but the next pic shows a sensor of some sort. It is taken from the rear of the car looking forward. What is this mechanism sensing?

 

It looks like your AFS headlights level sensor.

 

I also have code C1239 which I believe means that there is an issue with the left rear wheel speed sensor...specifically "debris stuck to the sensor left rear".

I noticed the check VSC, and other various lights, w/o the CEL shortly after I purchased the car. My first inclination (after reading the forum and doing a search or two) was that I needed to have the tranny drained and filled...which I did because the car has 159,000 miles and no record of the fluid being changed. I decided that I would take the car to an independent shop I trust and have them look over the entire car and scan for codes, as well as drain and fill the tranny. The fluid needed changing but reportedly was burnt. My gameplan is to drive a bit more and drain and refill a couple more times. No shifting issues at all. Never got a CEL.

Help ID'ing the above items please...

 

AFS?

Why would the headlights level sensor (never heard of that BTW) be on the drivers side rear wheel?

 

If you have an ohm meter check resistance on the 2 pins. If you get Zero it's a dead sensor.

 

You have one front one too. Next to your sway bar. Driver side. It has to do with the rear when loaded with weight adjust up and down. The other corrects the horizontal adjustment. Someone correct me if I'm wrong.

 

I think this is what your looking at. It is a ride height sensor. I have added a picture from Rockauto's site.

Ride height Sensor
Assembly includes sensor and linkage arm (adjustable or non-adjustable)
Sends continuous electric signals to the computer
Maintains the correct headlight alignment and/or suspension height

Alternate/OEM Part Number(s): 8940830130

 

Yep that's it.

What about the first pic? The line going in to the wheel hub assembly...with the blue mark on it?

 

This is part of your parking brake cable system. Here is a pic I took off ebay for you.

Lexus IS 250/350 Parking Brake cable
http://www.ebay.com/itm/2006-2010-LE...pZiGsp&vxp=mtr

 

Both items confirmed. Ride height sensor and E-brake cable ... FWIW these use a drum and shoes for E-brake.

As for the code, static charges can make road debris stick to both the speed sensor and counter wheel. Use compressed air to blow them off. If ohming sensor, verify connector pins are corrosion free.

You might also jack the vehicle and support it. Verify wheel bearing has no obvious free play by grasping tire at 12 o'clock and 6 - try to rock it top to bottom.
Repeat side to side at 3 and 9 o'clock.

 

Thanks for the replies. I have not taken the rear wheel off yet to investigate where the speed sensor is even located. (Car is new to me). I assume it will be obvious when I take a closer look and will check for corrosion and debris. I bought the car in AZ and the used car dealer there reportedly had both the rear wheel bearings replaced. So maybe care was not taken to insure the electrical connections were not clean and free from debris.

 

...or they installed the bearing backward. Usually, the bearing has a side that is magnetic and the other non-magnetic. The magnetic side faces inward and is picked up by the sensor. If they installed it backward, and that can be done and is very common if you don't pay attention, then the sensor never detects the wheel rotating.

 

^The wheel bearings on our cars come as an entire assembly; no pressing in or out any bearings. There would no way to install backwards on our cars.

 

That sheds light on the topic. Best practice on these is to pull the wheel sensor before the hub moves about as NOT doing so puts the sensor at risk from damage.

Another thread here a member took the toothed ring off the hub during bearing replacement. Hinting that the ring will be damaged if left in place.

Inspect the sensor connections, pull the sensor, inspect the ring gear.

If you have an ohm meter, perhaps spin the axle and read the sensor output. It should fluctuate. Data is rather useless until compared to a good one like for example from the front which will be easier to spin.

 

All good inputs. Will report back with results when able. I have been busy installing the interior on a vintage Jaguar which must be completed first. Then on to the 250 suspension and front LCA Fig bushings. While in there I will take a much closer look at the sensor.

As a side note...ever since I got the tranny fluid changed, about a hundred miles or so...the Check VSC caution came on once. As I drove away from the shop...lol. Then...nothing.

Again the car was driven by a woman, serviced at a dealer it's entire life, and never had the tranny fluid drained/flushed etc. I elected to have an independent shop drain and refill as I just did not have enough time to do it myself.

So far so good. More later.

Here is a pic of the Jaguar.