tire pressure

Hi,
I picked up my brand new 2009 Dodge grand caravan SE yesterday. the tire
aire pressure lite is on and they told me thats normal because they checked
all tires this morning. it is kind of anouning to see that lite is one all
the time, if it is on all the time why Chrysler put it in?
Any comment?
Rob

 

Assuming that it's like our 2008, the light should go out after driving for
10 minutes at speeds above 15 mph (if the tires are properly inflated).

I'd check the tires next time they are cold and if the pressures are correct
and the light stays on after 10 minutes of driving take it back for repair.

Pat

 

Check door plate/spec'd tire pressure. If it's like mine, it calls for
35 psi--lots of folks still put in like 30-32. HTH, s

 

Congrats on your new car. May you enjoy many happy miles of motoring.


DAS

To send an e-mail directly replace "spam" with "schmetterling"

 

I wouldn't like that light on all the time either.
If that how it works, I'd have it disabled.

 

The tire pressure warning light is there for a valid reason--period. If
everything is working lie it should, it should not be on--period.

Now, if the temperatures have changed from what they were when the tires
were initially inflated, that can trigger it as tire pressure drops when
ambient temps drop. If everything was initially fine and then it came
on, that can be the reason, if the pressures go "out of programmed
parameters", so to speak.

I presume that it is a direct reading system as GM uses rather than
using the wheel speed sensors to note a wheel turning faster than its
axle-mate on the other side of the vehicle.

It is possible that the system has not "learned" where the individual
sensors are on the vehicle, too, so it could be that the pre-delivery
inspection operatives might not have done that when they had the
vehicle. I do know that if the tires are rotated, the system must
relearn where the individual sensors are on the vehicle so that correct
readings can be transmitted to the system. Each sensor has a unique
radio frequency code th the system detects so it knows where each
tire/wheel is on the vehicle.

If the tire pressure light is on, you should be able to read each
individual tire's current pressure via the Driver Information Center
prompts. OR any other time you might desire.
Either with one tire's pressure per prompt or with axle pairs.

The light can also be tripped if the tires are inflated too much. I
also suspect that you can program the "relearn position" function that
way too, rather than having to use a scan tool.

There might also be some information on the system in the owner's
manual.

OR you can play the "dissatisfied customer" and take it back to your
salesperson and request he/she get it taken care of BEFORE you get your
Delivery Customer Satisfaction Survey.

Check the Driver Information Center FIRST, to see what the tire pressure
readings are. If you desire, then you can cross check that with a tire
gauge of known accuracy to see how things are . . . ONLY when the tires
are "cold" rather than after driving.

Regards,

C-BODY