Enhanced VSC/TRAC System light on constantly

[Dman1]

I haven't had the chance to take my HL to the dealer to address this issue, but I was wondering if anyone was aware of what the problem might be. My Enhanced VSC/TRAC system light is on constantly. The manual states that that the system light will blink when the system is engaged, but not supposed to stay on constantly. This happened a few weeks ago when I was going through a toll booth and while I was digging for change, my right leg pushed down on the brakes (which I have done at several toll booths in the past). There does not appear to be any change in the driveability of the HL, but I suspect the VSC/TRAC system will not work until I get this fixed. I was towing a 4000lb (estimated) trailer at the time, and continued towing it an extra 2200km with this problem with nothing out of the ordinary happening.

Just curious if anyone has experienced this.

[jeffs3820]

You can manually engage the 4WD system by pressing on the brakes hard as you describe but it return to normal as soon as you reach 10-15 mph. Just staying on as you describe must be a fault condition

[Dman1]

I finally brought this to the dealership to get addressed. It was a low priority item, so I just waited until I needed other stuff done...in this case, an oil change.

In any case, this is what was written on my work order:

Condition: Check for vehicle skid control light is on
Cause: Found Code C1290 - Abnormal zero point of steering angle sensor.
Correction: Checked all system and all is good. Code will come on when alignment done and battery not disconnected or a steering component replaced. No fault found - light is off.

So, I have never had an alignment done or steering service work. The only aftermarket electrical work that I have had done was the installation of a Prodigy P3 brake controller, which was installed by a local hitch shop. Perhaps that could have done something. I will monitor this to see if the light comes back on, but I removed my brake controller for the winter, so I will likely have to wait until camping season to see if anything happens.

[TrailDust]

Thank you for posting the update.