WTF!!! VDC Slip issue.

[Mr.Coupe]

OK... I'm driving to work in the morning and out of nowhere the VDC (OFF) and SLIP lights turn on. At the same time while driving the BRAKE light flashes on and off randomly. I just started thinkin to myself WHAT THE HELL IS GOING ON. I have an Injen intake, Stillen rear sway and Eibach prokit. What do you guys think it is? Any help is thankful. I don't have time at the moment to take it to the dealer. My next day off work is the 7th of August. I work from 6AM till 7PM 7 days a week. PLEASE HELP ME GUYS... Oh and when I turn the car off at a RED light and turn it back on the lights are gone. Then it happens all over again when I'm going home from work.

Ricky C.

[mcheddadi]

maybe the ebrake is slightly on? or the car thinks that

[Mr.Coupe]

maybe the ebrake is slightly on? or the car thinks that

Can't be. When the light starts flashing I push the safety ebrake button and push down on the ebrake handle to make sure it's not on at all. And NO lights on the dash board are on at all when I stat the car and drive away. Now what would be the reason for the VDC and SLIP lights turning on. Thanks for your insite mcheddadi.

Ricky C.

[uh-oh_8_coupe]

zeroforum?id=23

try the nissan online mechanic on NICO main forum

[alphapig]

It's those SE-R wheels man. The car knows they are from a Sentra!

But in all seriousness you should get that thing to a dealer ASAP, you don't seem to have anything aftermarket that would cause those glitches.

[marlin29311]

it could be because of the way your mods are installed and the VDC computer thinks something is wrong - i remember when i was thinking about changing the OEM tires out my tire shop said they wouldn't do it because of the fact that i was going to put on larger tires than standard and the shop said this would screw with the VDC system. Maybe the combination of your Eibach, sway bar, and custom wheels is affecting your VDC system....

[Afflicted]

I think you need a preist to get the demon out. Maybe check all your electrical connections around the areas you installed your mods in case something is lose. Any chance your car has been hit by lighting or run over a down power line? I wouldn't drive it without having a cell phone with you.

[maxentropy]

It's either an electrical issue or it could be what marlin mentioned with your springs and aftermarket wheels confusing the VDC. (I hope its not that).

How much larger by percent are your new tires?

As an example, my 245/40R19 are %1.5 larger than stock. If your new tires are larger than + or - 3 percent from stock, your tires are probably the cause of it.

go here to check % from stock- http://www.1010tires.com/TireS...ubmit

[RPx2.5]

wow! you work every day? 13 hours? what kind of work do you do if you don't mind me asking? o and i think you should really see the dealer..just to be on the safe side man...since you're using your car everyday...

[Loop]

Whats your tire size? If your car has VDC enable and you go out of 3% range with your tires you will have problems confusing the computer.

[Mr.Coupe]

My tire size is 225/40/18. My rear sway was installed by Stillen. The Prokit and intake were installed by me. I am a former TECH so I know what I'm doing. I was very carefull.

Ricky C.

[Loop]

Sorry to say, but it is your tires. They are out of the +/- 3% range which is causing your car to do that. This only applies to VDC enable cars.

Easy fix is to get new tires within the 3% range.

[maxentropy]

Holy crap. Your diameter difference is 4.68%. Not good. Take those tires off immediately and put on ones that fall within the plus or minus 3%.

Get some new tires and let us know how it goes!

[Sentientbydesign]

The VDC issue only comes into play when the tires are staggered in size AND exceed 3% from each other (or from the ratio between the front and back).

So, if the tires are all the same size, how will the ECU know that your tires are a different size than stock? It uses the speed sensors at the wheels to measure this and it does so by rotation.

I would actually check your brake fluid level and the brakes themselves. I've read about the VDC OFF, SLIP, and Brake lights coming one when the brake fluid level is low (which only happens with a leak AND/OR worn brakes).

[Tommy:]]

Sorry to steal the topic real fast but does that mean cars without VDC can go outside the + or - 3% tire range without problems?

[Sentientbydesign]

Your ABS may still give you problems.

[adidas2go]

For the time being, just turn off your VDC when you get in the car

[Tommy:]]

Your ABS may still give you problems.

i was thinking of going 225/45/17 on a 2.5s O.o. Think i would get problems?

[Forrest80]

i know this is off topic of your thread but man i love your SER wheels. Did you by chance happen to weigh them before you put them on?

[Sentientbydesign]

]

i was thinking of going 225/45/17 on a 2.5s O.o. Think i would get problems?

The problem is staggering them. You guys have FWD. There is NO reason to have larger rear wheels other than looks. If you change all of them to the 225/45/17, you should be fine. You'll just have a speedo and odometer error. What is the stock size? Sorry, I don't keep up on all of the stock Nissan/Infiniti sizes.

[Tommy:]]

The stock size for the 2.5s is 215/60/16.

[Mr.Coupe]

i know this is off topic of your thread but man i love your SER wheels. Did you by chance happen to weigh them before you put them on?

Sorry dude, but I didnt get a chance or even thought of weighing the wheels. All I know is that they ar light as hell. I was able to carry one on each hand with no problems of their weight or a struggle.

[Mr.Coupe]

Holy crap. Your diameter difference is 4.68%. Not good. Take those tires off immediately and put on ones that fall within the plus or minus 3%.

Get some new tires and let us know how it goes!

Sorry dude. Just took a second look at the tires and they are 225/45/18 which is a 1.3% difference. So it would not have to do with the tires. I checked the brake fluid and added a bit. That would still have othing to do with the VDC OFF and SLIP lights turning on would it? Thanks for all the advice and help. You guys are the best.

Ricky C.

[Burtonboarder950]

I used a house-call mechanic once because my engine light was on. He comes in his truck full of tools, and at any time I was available, which is good for your busy work schedule. He plugged his computer into my car and told me exactly what the light was on for. It ran me $100. Try the same, just get a mechanic over your house after work and I'm sure you''ll be all set. You never even have to take your baby to a shop.

[Mr.Coupe]

Thanks Burtonboarder950. I will look into this. I might even have my dad drop the car off at the Nissan dealer and I'll drive my 05 Frontier for the time it's in. I'm still thinking of what it could be though.

Ricky C.

[Sentientbydesign]

Sorry dude. Just took a second look at the tires and they are 225/45/18 which is a 1.3% difference. So it would not have to do with the tires. I checked the brake fluid and added a bit. That would still have othing to do with the VDC OFF and SLIP lights turning on would it? Thanks for all the advice and help. You guys are the best.

Ricky C.

Do I have to add "3.5L AC VDC" to my list of cars for you guys to believe me? lol

The brake fluid WILL affect VDC, SLIP, and BRAKE lights. The systems are all intertwined.

[adidas2go]

Really sounds like a computer issue to me. If he was low on brake fluid, he would feel it in the pedal and know something was wrong. Not to mention the fluid would have to be leaking somewhere.

That guy burton is talking about, comes your house, and plugs in a OBD II reader to erase the code. Charges you $100 to do it. The reader costs $30 at autozone and comes with a universal code book to help you distinguish the problem. Go guy one and save yourself the money.

[Mr.Coupe]

Really sounds like a computer issue to me. If he was low on brake fluid, he would feel it in the pedal and know something was wrong. Not to mention the fluid would have to be leaking somewhere.

That guy burton is talking about, comes your house, and plugs in a OBD II reader to erase the code. Charges you $100 to do it. The reader costs $30 at autozone and comes with a universal code book to help you distinguish the problem. Go guy one and save yourself the money.

Thanks for the info Blake. So you car is finally done I see. I'll take that test drive you told me about now. How's she running? You guys are all great with helping people out in the forum. Many thanks to all of you'z...LOL I added a bite if brake fluid and I'll have to see what happens with that. Man I hope that was it.

Ricky C.

[PhillipRumans]

There was a similar issue with the 2003 Infiniti G35 sedans back when they first came out. It turned out to be some switch attached to the brake pedal that was causing the problems. With mine, the lights were on from when I started the car and I had a hard time getting it out of park. Also it was causing the rear brake lights not to activate when I would brake.

[Mr.Coupe]

Done... I added brake fluid almost 1 eek ago and no lights have turned on. It's crazy how some brake fluid needed will make the BRAKE, VDC and SLIP lights on. Thanks for all your help guys.

Ricky C.