grumpyoldman

Hello to everyone

First post here - although I have been around since the summer lurking through the posts. I bought a 2005 Liberty Limited (used) in early August, and I love it. I have a question that I am hoping might be answered by someone on here, concerning the tire pressure sensors.

As the temperature has dropped here in the Great White North, I have seen a warning on my overhead display concerning the spare tire, indicating a drop in air pressure in the spare. This is not much of a surprise, as it gets colder outside the air pressure will reduce to some extend in an exposed spare tire, but the surprise is that there is a sensor for the spare....This is something I was unaware of and am a bit shocked by - do all Liberties have this feature?

Also, has anyone ever experienced any sort of questionable readings from tire pressure sensors? Yesterday, while driving down the 402 highway here in Southwestern Ontario, the following happened:
a) as I departed, the dash cluster warning light was on, indicating low pressure in a tire;
b) the overhead display indicated that the driver side rear tire was low on air (as the value was flashing), even though it was the same as the driver side front, and only 5 kpa lower than both tires on the passenger side;
c) as I drove along, the dash cluster light went out, the overhead display showed that the driver side tires were both at 207 kpa, the passenger side tires were both at 214 kpa;
d) the passenger overhead display indicated that the passenger rear tire fluctuated between 214 kpa and 221 kpa, back and forth, for about 10 minutes, then stabilized at 214 kpa.

Has anyone ever experienced something like this? Before I get too concerned, I wanted to see if this is a typical reaction for these sensors as the ambient temperature drops...

Thanks!

John the grumpyoldman

04WJGuy

Hi Grumpyoldman,
I owned a 05 Liberty for awhile and yes mine did the exact same thing with the tire pressure readings. If you have an alloy wheel on your spare it has the sensor in it, the factory steel spare didn't have one. So no not all have it. If you have a steel wheel on your spare then the PO of the Libby had the sensor put in.

grumpyoldman

Thanks much - I do, in fact, have the alloy wheels so that explains the spare tire warning.

bmerdinian

Hey there, as per the above post, that is normal, to avoid that just fill your tires with Azotte, just go to the dealer and fill them up. It will cost you 29$ and it is worth it. You will never have tire problems in your life.

Cheers

Savasa

Greetings,
Azote is also known as nitrogen.

bmerdinian

right :) thats it

04WJGuy

Filling your tires with Nitrogen is only good if you never plan on airing down to go offroading, or you have to buy your own bottle to take along with you. Most people use CO2 if they're going to go that route, much cheaper.

Chasmoe

If those sensors are going to play games and be a pita, so why can't a guy just have them removed?
Just asking as I read this post. Don't tell me that it will tell the computer to not allow the engine to start. Lol.