Tire pressure warning light is going off but the tires look fine

dandg · 01-06-2010, 05:31 PM

Quote:

Originally Posted by JB1

It should, but I wouldn't wait for it, just adjust it now and re-adjust when the temperature goes up again (if needed)

Is it okay to put regular air in tires filled with nitrogen?

I know the regular air is composed of 78% nitrogen. But I'm not sure the effect it will had. I really wish my tires didn't have nitrogen, but it came with the car..

VCuomo · 01-06-2010, 05:44 PM

Quote:

Originally Posted by dandg

Is it okay to put regular air in tires filled with nitrogen?...

Yes, although it's better to keep using pure nitrogen if you can (it's less susceptible to pressure changes caused by temperature changes, and your tires will remain at the recommended tire pressure longer than they would with "normal" air).

PapoZalsa · 01-06-2010, 07:04 PM

Quote:

Originally Posted by dandg

Is it okay to put regular air in tires filled with nitrogen?

I know the regular air is composed of 78% nitrogen. But I'm not sure the effect it will had. I really wish my tires didn't have nitrogen, but it came with the car..

However you should go to the dealer and get it service. You already paid for it!

SBZ · 01-06-2010, 07:13 PM

I had the same problem last week. Normaly the car lives in the garage, but we were on a road trip to Monterey Ca. It was a cold night. The warning light went out after about 20 minutes of driving.

vipor · 01-06-2010, 07:29 PM

Quote:

Originally Posted by SBZ

I had the same problem last week. Normaly the car lives in the garage, but we were on a road trip to Monterey Ca. It was a cold night. The warning light went out after about 20 minutes of driving.

tires heated up while driving, expanded the air. highway driving does it pretty quickly.

happened to me the first cold snap we had here. been a little better about checking them since.

Dwight Frye · 01-06-2010, 09:29 PM

No problems yet with my 370Z but I have noticed they lose about 1 lb a week on all 4 tires and I've long been aware of larger fluctuations due to the ambient air temperature. I just put a few pumps into each tire with a bicycle pump about once a week rather than trying to find a gas station air pump that works. My G35 Coupe was the first car I owned with TPS monitors and one cold (for SouCal) winter morning the warning went off. I pulled into the closest gas station and checked the tires with my own dial gauge and all 4 were down to about 27 lbs. The standard PSI was supposed to be 35 and I think the TPS sensors are supposed to go off when the pressure drops lower than about 8 PSI below their threshold so the system worked perfectly. I pumped them all back up, drove a few miles and the light went off and never had it happen again.

01-06-2010, 07:13 PM	#4 (permalink)
SBZ Base Member Join Date: Nov 2009 Location: Carpinteria California Posts: 12 Drives: 2010 370z Roadster Rep Power: 16	I had the same problem last week. Normaly the car lives in the garage, but we were on a road trip to Monterey Ca. It was a cold night. The warning light went out after about 20 minutes of driving.

01-06-2010, 09:29 PM	#6 (permalink)
Dwight Frye Enthusiast Member Join Date: Jul 2009 Location: Occupied California Posts: 423 Drives: '09 Tour/Sport/6MT Rep Power: 17	No problems yet with my 370Z but I have noticed they lose about 1 lb a week on all 4 tires and I've long been aware of larger fluctuations due to the ambient air temperature. I just put a few pumps into each tire with a bicycle pump about once a week rather than trying to find a gas station air pump that works. My G35 Coupe was the first car I owned with TPS monitors and one cold (for SouCal) winter morning the warning went off. I pulled into the closest gas station and checked the tires with my own dial gauge and all 4 were down to about 27 lbs. The standard PSI was supposed to be 35 and I think the TPS sensors are supposed to go off when the pressure drops lower than about 8 PSI below their threshold so the system worked perfectly. I pumped them all back up, drove a few miles and the light went off and never had it happen again.