I had to replace all four tires. It was amazing to me but that took care of it. I must say it drives and handles better that it ever has. The cars are too smart for their own good I guess. Good luck

 

The answer to your question is just above you post. Did you not read it? Did you not believe it?

Lou

 

So I find it hard to believe the car has the exact same two lights for all these different measurements, I just changed my brakes and now those two lights are coming on. Im about to replace the rear tires cause one is really worn but this didn't happen before I changed the brakes. So far as I can tell the VCD light and Slip light coming on mean:

Low brake fluid, service brakes.

Tire size not correct to operate VCD

TPS malfunctioning (this is followed by going into limp mode)

Alignment not correct

and feel free to add anything else to the list since I have to see what is setting mine off...

 

I had this problem...and it was VERY bad. In the first week of December I had my rear snow tires replaced with new ones. The fronts were still at 8/32" tread depth. When new, the Dunlop Winter Sport M3's are 11/32" tread depth.

Having replaced the rears with identical make tires (all wheels were using their respectively correct size tire), the VDC (traction control) would pulse/lock the front driver's wheel at highway and backstreet speeds when turning right (and occasionally left). Very dangerous and scary.

The dealership (Infiniti of Cincinnati) first thought the tires were a problem. After confirming correct tire sizes, they thought it might be an issue with either brake fluid level or front (older) tire tread depth. They lent me new front tires (Dunlop's again). This didn't solve the problem.

By early/mid January, the dealership decided to keep my car for extensive testing (and a free loaner with only 27 miles). After replacing almost every sensor associated with the VDC/traction control system (and confirming that the ABS sensors were perfectly fine...and then even cleaned them for me), they determined that it was not a sensor problem.

They then decided to (on a lark) measure (with a measuring tape) the rear tires. Sure enough, the two rears were different in size when inflated. They measured between 1 and 1.5 inches differently with respect to each other (depending on outside or inside tread measuring locations). But this only showed up when they were inflated. The tires were from the same production batch. They were the same "official" sizes. They just didn't inflate the same.

Replacing them (with ANY set of matching tires) fixed my problem. Needless to say, I am very happy with the help I received from my dealership. They only charged me for a new set of rear tires (that I forced them to sell to me). All of the replacement parts/sensors that they installed were free of charge. They didn't even charge me for labor...they had it for 3 weeks...Oh, and my 2004 coupe has 88K miles on it...way out of warranty.

CONCLUSIONS: (1) Don't buy Dunlops...I will never again. (2) Measure your tires closely and while inflated. Differences between rolling measurements will cause VDC to think an oversteer situation is occurring. (3) Go to Infiniti of Cincinnati for the best service you can EVER find.

 

^^^ see mine was off for a long time, then it just came on and the only difference in driving ability is that the VDC was off so I could peel tires without the computer stopping the throttle. Im thinking it's still the tires so Im about to replace them on monday. dang these cars are freaking high tech.