Need help with AYC sensor warning light. I started it up a few days ago and got the warning light.

AYC OFF - Service required

So I took it to the dealership and they took a look at it and said that my steering calibration was off and that they fixed it.

Following morning (today) I start up the car and the warning light is back. I call the dealership again and schedule for them to fix it. A few hours later, when I start the car to take it to the dealership the warning light is gone.

Dealership says there may be something wrong with the sensors.

My question is:

What causes this light to go off (other than extreme changes in temps)
Should I be worried about my Active Yaw Control system or is this just a little electrical gremlin?

My car is still completely stock other than a drop in filter.

 

In colder climates I think there was a TSB about this and the AYC pump going out. I'm not sure if that is what you're getting.

I'd definitely keep after the dealership on it though; it's likely not just a gremlin.

 

check the reservoir in the trunk.

 

+1 on the reservoir.

 

What should I be looking for concerning the reservoir? fluid levels?
thanks

 

Yes.. check levels

 

Check levels.

 

Checked levels, they're fine. I think it was just the temp jump from hot to freezing.
The problem now is..since I brought it in to the dealership, they made adjustments to the steering wheel and it's off center now.

 

iv'e had this same problem lately. every other day it comes on, but if i turn the car off then back on it tends to go away. mine is actually the ACS light. not sure what to do about this....

 

The AWD service light came on today in my car. It was driven rather aggressively yesterday and it was fine this morning. When I drove again in the afternoon the light came on. Before this happened a strange pump like mechanical sound was coming out of the back where the reservoir is. I heard this once before a couple of months back, but no light came on after. While the noise was happening I checked the fluid, it was very low, almost to the bottom and it seemed like it was bobbing up and down/bumbling. I left the car for a bit then checked the fluid and it was at the minimum line. Dont know whats up the the diagram on the dash showing torque distribution isnt working and I dont feel like the system is on. The car over steers and I feel like it not handling the high speed turns like it should be.
There was a strange vibration in the car/steering column that started a couple of months back, but this may be due to a bad job at installing a crank pulley.
The weahter here has been at its coolest, not sure if this has an effect.

 

how is that a problem? take it back to the dealership and make them fix it. that's what warranty is for.

 

the light comes on once when i was tracking the car and i checked the reservoir and it's full...
Im going to see what the dealer says about this...

 

The owners manual states to check the fluid level before you start it up or several hours after you parked . So make sure you read the level when the car was parked and not started or driven for some time .

 

Just had this problem for a month. Ayc warning comes up every time i wot.. just had my wheel alignment and balancing done yesterday and ayc warning gone.