Thank you everyone! Happy holidays!

 

You need 30 plus PSI to make the TPMS go out in these cars...Put the tires at about 33-34 PSI cold...Jason

 

The TPMS is set according to the door label in each car, where the preferred tire pressures are printed. My 2005 QP wants 29 PSI for the tires on 18-inch wheels, so the alarm won't go off until it is quite a bit below that. Other cars maybe are set higher.

 

I think your TPMS needs re-calibrating if you want to stop the error.

Actually I think your tyre pressures are low. You should inflate to the specified pressure when cold.

(BTW the TPMS uses the ambient air temperature to work out what is an acceptable range of pressures t1xP1xV1=t2xP2xV2)

C

 

Tire pressure warning light

I have new tire pressure questions: When I first start the car (2016 GTS) in the morning I get the low pressure warning light, and all four tires show about 27 to 28 psi. Once I drive for a bit (10 minutes or so), then the pressure goes up to 31 psi and the warning light goes off. I know air expands with heat. My questions are: (1) this happens only with my GTS not with other cars. Is this normal? Outside temperature overnight to early morning is about high 50s to mid 60s in Los Angeles these days (2) do I fill the air based on the reading at the time of cold start or when it gets warm? My concern Is that I may ruin the tires by driving under inflated for the first 10 or so minutes; but I certainly don’t want to have 34 psi + either

 

Ger, there is a lot of people on this forum that have a lot of knowledge but I think given that all issues can vary, I would just have the dealership take care of it. It becomes there minor issue and I’m sure they will figure it out easily once they have a vehicle in possession. I’ve even called the dealership in Illinois and service tech kept saying just hit calibration and it’s fine. It’s very possible they misunderstood or make mistakes. We’re lucky that this is the issue we are having and not a much more serious one. I’m a big believer in Mastering my job and then I don’t have to worry about other issues that arise. If I do my job right then that should generate enough to allow the other professionals in the their field to handle the issues I’m not familiar with. I understand if this is something you are tackling just to keep busy or for hobby sake but I think I’m throwing in the towel with this one. Like you mentioned earlier, to many different opinions on how to correct the issue.

 

Thanks Grant435,

The confusing part in all of this would be the comments about "just re-calibrate". I've seen on another forum that only 2 methods work in replacing the TPMS sensors because each sensor has a unique s/n(address)

Method One is to have the shop read all the info including the s/n of the TPMS sensor for each tire and program the new sensor with this info. Calibrate and good to go as the ECU will recognize the s/n.

Method Two, replace the TPMS sensors record the s/n for the sensors and have the dealer code into the ECU.

If anyone can confirm or elaborate on above it will surely clear up a lot of the confusion. And if method 2 is accurate does anyone know of a programmer that can do this?

 

No dealer reset should be needed. Just have to live with the error message until the wheels with sensors are re-installed. Then redo the calibration (may take a few tries) and drive it some and it should work.

A

 

My mistake, once the sensors are replaced does it require a Dealer Reset of the error? Or a calibration will clear the error? Does it vary on the TPMS system which errors require a dealer intervention?

 

IF I’m reading the manual correctly (photo below), it says you must go to dealer to clear tpms malfunction message. I’ve had standard tpms light go on in past and I have resolved it in minutes with calibration button. This message will not clear and I’ve been driving for months. So it’s probably an error message that needs to be cleared as manual says. I’m not driving 45 minutes to dealership just for that though. I’ll wait till I get my oil and service in about 5-6 months.
https://i.imgur.com/piPVOmZ.jpg

 

Jason, with this type of malfunction/error does it require a Dealer Reset of the error? Or a calibration will clear the error? Does it vary on the TPMS system which errors require a dealer intervention?

 

If there are no sensors in the wheels, it's always going to throw an error.

C

 

If you have no sensors in the other wheels, then you are gonna get a malfunction warning....Jason

 

Did you change the tyres, or the wheels?

C

 

Sorry, this was misleading: yes, I changed tyres and rims, the winter kit does not have the sensors.

The question is: Should a correctly working system tolerate this with something like "no air pressure available" or is it always the TPMS failure - go to dealer warning?

 

The sensors are on the wheels behind the valve stem. Changing the tires should not affect indication. Unless you changed wheels and tires altogether, in which case not sure how to remove the indication.

 

Dear all,
I have a similar question regarding the error messages of the TPMS:
I have a new ECU installed by Maserati, they said everything fine (with the summer tyres).
I could not check on the road myself, as I immediately changed to winter tyres which do not have the sensors.

I thought after calibration the system should recognize that there are no sensors?
Error message now is TPMS failure - go to dealer (take your money with you).
Is it normal or indicating that the system is still not working correctly?

It's a QP Sport GT S (pre facelift) of 3/2008.

Thank's for your help, best from Bavaria,

Alex

 

I want to thank everyone on your inputs regarding my issue and would like to say that after a few calibration attempts everything is back to normal.

Have a Happy New Year.

 

My GT 2008 got warming because I have a defective TPMS Module under the driver side carpet. I got one from Maserati dealer at Lakeforest Chicago for about $330. Once I replaced it and drove for 5 miles. Everything cleared up by itself.


从我的 iPhone 发送，使用 Tapatalk Pro

 

No, when one dies the system stores a fault and you will longer be able to read any of the sensors...Jason

 

Thanks again, Jason, for your valuable input. That is helpful.

 

If one of the TPMS batteries dies will the display show --psi for all 4 tires?

 

Not 100% sure, but I don't think so. I think it'll come up with a TMPS unavailable statement.

C

 

Does the calibration restarts from the beginning everytime you you push the calibrate button?

 

Yes

If the batteries die, you get a different error message, at least on the GT

C

 

Can the batteries on all sensors die at once? when I go to check the psi there are dashes only for all 4 tires.

I really appreciate your help on this. I have the car for sale I want to take care of this before I sell it.

 

1- if its a calibration issue, catman is spot on. it takes about 5-8 miles at about 60mph to calibrate. the calibration stops if the vehicle drops below 10mph or so.
2- it could very well be the sensor batteries, their lifespan is 4-6 years in my experience. if they are low, they may calibrate but can lose calibration again.

 

You need to drive for a while when the calibrations is taking place. I can't recall the exact distance time but it's *about* 20 minutes or so. You'll need to start it again now you've put some more air in. Eventually it should clear and show you pressures as normal.

HTH

C

 

Anyone?