Low tire ding

[1fastviper]

2008. It might vary with the Gen III.

Yep,thats why.They changed it on the gen4s.

 

[1fastviper]

Well i was out there getting ready to disconect the wire when i thought if we are disconecting power to the fuse box then there should be a fuse for the tire pressure module.

I looked under the fuse cap and it did not show a fuse for the tire pressure nmodule or (tpm).Anybody else know what it might be under?

 

[bluesrt]

Well i was out there getting ready to disconect the wire when i thought if we are disconecting power to the fuse box then there should be a fuse for the tire pressure module.

I looked under the fuse cap and it did not show a fuse for the tire pressure nmodule or (tpm).Anybody else know what it might be under?

could not find where their is a fuse,i think its all in the modual,just try to unplug it,it will either make the light stay on or it wont.

 

[dragon rider]

Great job on the pics Shandon. I'm looking to get a set of rear wheels and tires for some drifting exhibitions. That write-up will surely come in handy.

 

[1fastviper]

could not find where their is a fuse,i think its all in the modual,just try to unplug it,it will either make the light stay on or it wont.

I would like to! Only thing is I dont know how the dash peice comes off to get to the module? I dont want to break anything.

 

[bluesrt]

I would like to! Only thing is I dont know how the dash peice comes off to get to the module? I dont want to break anything.

hope this helps,remove the face plate to stereo,i believe u have to remove the shift bezel first,then the stereo face plate,then remove the guage pack(the guages are all one piece,very simple),and then u can unplug the modual

 

[Shandon]

I would like to! Only thing is I dont know how the dash peice comes off to get to the module? I dont want to break anything.

Dude seriously, Leave the dash alone!

Please try the above write up "I DID" for you! It won't affect anything with your car.

 

[1fastviper]

Dude seriously, Leave the dash alone!

Please try the above write up "I DID" for you! It won't affect anything with your car.

Yea, but will disconecting the fuse box keep it from dinging again later on? I just dont want to have to worry about it anymore.

 

[Shandon]

Yea, but will disconecting the fuse box keep it from dinging again later on? I just dont want to have to worry about it anymore.

YES mine never comes on ever no ding no "Low Tire" on the LCD nothing!
FYI make sure the TPS sensors that you took off are not in your garage after the reset. You dont want the computer getting a signal from them. It works like a charm for me on the 05 GenIII!

 

[ulllose]

Do you want a picture of it saying FLAT TIRE? It even mutes the radio when it comes on.

Yes mine radio muted also, actually I had the RB1 nav. in the car at the time.
It must be a gen 4 thing with the "flat tire" light

 

[VIPER GTSR 91]

I got the low pressure light today on my new 09. After checking the pressures, all were between 27 and 32 psi. When I called the service dept. and informed them my manual says it will come on only BELOW 23 psi., he informs me that it will also come on if there is a 2 psi or greater difference between any tire. Is this true as its not stated in the owners manual?

 

[lagalaxy13]

I'm having the same trouble on my 03. Stock tires & wheels all at about 29 lbs. Give or take a lb. Manual says comes on under 20. But it won't go out & stop dinging. I can't drive the car because of the roads. You think unpluging and waiting will reset it?

 

[VIPER GTSR 91]

The dealer solved the problem today. Took 15 minutes. They have a programmer to re set the sensors after a light is on. Found out Discount Tire has the same thing and is a free service.

 

[1fastviper]

I'm having the same trouble on my 03. Stock tires & wheels all at about 29 lbs. Give or take a lb. Manual says comes on under 20. But it won't go out & stop dinging. I can't drive the car because of the roads. You think unpluging and waiting will reset it?

Yes it will but make sure you keep your door open because for some reason after removing the wire you key fob stops working and you electric door handle will not open the door.

I had to insert the key under the mirror to open the door.Then when you start your car the key fob starts working again and so does the door.

 

[Newport Viper]

 

[1fastviper]

So the tpm communicates with the body control module from what im reading.The tpm must be getting its power from there also.I wonder if it will affect the bcm if you do unplug the tpm.

 

[Mopar Boy]

I had to insert the key under the mirror to open the door.Then when you start your car the key fob starts working again and so does the door.

Say what? Is there a normal key hole under the door acting as the remote release?

Never heard that before.

Robert

 

[kwiksilver]

It's a gen 3/4 thing

 

[ulllose]

Say what? Is there a normal key hole under the door acting as the remote release?

Never heard that before.

Robert

yep,, you will need to upgrade to a gen 3/4 to be able to use a normal key again...lol

 

[Mopar Boy]

Darn. Takes the fun right out of opening the trunk and trying not to scratch the paint while opening the door!

Robert

 

[Malu59RT]

For all those that doubted, here is a photo of it saying "FLAT". On a side note, 1 mile after this photo was taken, the "FLAT" and "LO TIRE" light both went off, and haven't come on since. Must be that it's no longer 40F outside but 70F. I don't like having to add air for 1 or 2 psi difference when it's colder outside.

 

[Roadrunner]

The TPM system is slightly different between the GEN III and GEN IV cars...

GEN III (Runflats) - Low pressure is 20psi / Critical sounds at 14psi
GEN IV - Low pressure is 23psi / Critical sounds at 18psi

Regardless of how you "feel" about setting your tire pressures... physics dictates the following:

Tire pressure may increase from 2 to 6 psi (14 to 41 kPa) during normal driving conditions. Do NOT reduce this normal pressure build up. NOTE: Tire pressure will vary with temperature by about 1 psi (6.9 kPa) for every 12°F (6.5°C). This means that when the outside temperature decreases, the tire pressure will also decrease. Tire pressure should always be set based on cold inflation tire pressure.

Oh and don't forget that tires typically lose about 1psi / month even while sitting.

If you think you are over the pressures listed above, you may want to check your gauge... the sensors are normally very accurate (far more than Pep boys guages), I have had gauges that read up to 4 pounds off.

Also keep in mind that you need to exceed 20-30mph after adding air to activate the sensors and allow the system to read the data before the light will go out.

 

[Malu59RT]

Cold tire pressure refers to the pressure before the vehicle has been driven, which is what my car is set to. It annoys me that the tire pressure LIGHT comes on saying there is an issue with tire pressure when in fact, the pressure is correct for driving, not at just that one instant. 4 miles of driving, and the sensor goes off, but every morning (yes I drive my Viper in 30F or 40F weather) it tells me I need to add air. If I add air to get rid of the chime, I will actually be driving on over-inflated tires.

I would appreciate an off switch for the TPMS for instances when weather conditions dictate my sensors, not the condition of the vehicle for 10 minutes after I start it.

 

[Roadrunner]

What I'm saying is that you must be really low pressure in order to get the light and have it turn off after 4 minutes of driving - Hot or cold... you'd have to have a "cold" pressure of under 23psi...

What "cold" pressure are you running? If it is over say 25 pounds there is something other than tire pressure wrong with your TPM system. You may have a bad sensor. Get that repaired and you'll stop wanted to "tear your eyeballs out".

I too drive down to zero degrees... but on Pirelli Sottomax Snows... (only 275 wide in the rear). They actually like being about 5 psi higher than normal when on snow (~35psi). They self clean better.

 

[lagalaxy13]

If you think you are over the pressures listed above, you may want to check your gauge... the sensors are normally very accurate (far more than Pep boys guages), I have had gauges that read up to 4 pounds off.

Also keep in mind that you need to exceed 20-30mph after adding air to activate the sensors and allow the system to read the data before the light will go out.

I checked all 5 of my gauages and they were within a few psi if not spot on.

I'm thinking my problem is that I can't drive my car yet to reset it. I didn't see anything in the manual that said you have to drive to reset. Guess i will have to listen to the ding from hell for another month if I decide to start it up and sit in it.

 

[Roadrunner]

Here is the excerpt for TPM from the service manual... note the wheel speeds listed... that's what engages the sensors. I believe they turn off after a period of inoperation to preserve the battery in each sensor.


OPERATION
The Tire Pressure Monitoring (TPM) system operates by monitoring a radio frequency transmission from the tire pressure sensor/transmitters located in each wheel, and integrated with the valve stem. When the vehicle reaches a speed of approximately 32 km/h (20 mph), centrifugal force created by the wheels rotating closes a roll switch inside each sensor, powering up the circuitry. To facilitate transmitting the radio signal to the TPM module, the valve stem acts as the antenna for the tire pressure sensor/transmitter.
The Body Control Module (BCM) monitors the tire pressure signal that is sent from the TPM module when the ignition key is in RUN/START position. When the BCM receives the tire pressure signal it will send a corresponding bus message to the cluster. If the BCM message indicates a fault, then the cluster will display in the odometer "LO TIRE" and send a chime request message to the BCM.


POWER UP INITIALIZATION

When the ignition is turned to RUN, the TPM output signal is grounded for 2 seconds, then goes open. If this sequence does not occur, then the BCM registers the Tire Module Initialization fault (DTC). Once this fault is matured (10 seconds), the BCM sends a bus message to the cluster. The cluster will display "LO TIRE" steady on and send a single chime request to the BCM.


TIRE DIAGNOSTIC FAULT

Once the RUN/START cycle and initialization of the TPM is complete, a tire diagnostic fault will be registered by the TPM if one or more tire sensors are not transmitting. These sensors start to transmit data after the wheel has reached a speed of approximately 32 km/h (20 mph). Because the BCM knows vehicle speed, it will mask this fault for 70 seconds after the vehicle speed is greater than 32 km/h (20 mph). Once this 70-second timer has elapsed, the BCM will monitor the TPM output for a diagnostic fault. If the TPM output is grounded for greater than three seconds, the BCM will start to mature the Tire Module Diagnostic fault and after 10 seconds, send a bus message to the cluster. The cluster will display "LO TIRE" steady on and send a single chime request to the BCM. If the fault has matured since the last ignition ON cycle, cycling the ignition switch will not clear the fault.


NOTE: If a tire is changed, the TPM must be reprogrammed or this fault will be set.

TIRE LOW PRESSURE

If the TPM module output toggles two (2) seconds low, then two (2) seconds open for 10 seconds, the BCM registers the Low Tire Pressure matured fault and sends a bus message to the cluster. The cluster will flash "LO TIRE" at a rate of two (2) seconds on and two (2) seconds off and send a single chime request to the BCM.


TIRE CRITICAL PRESSURE

If the TPM module output toggles one (1) second low, then one (1) second open for 10 seconds, the BCM registers Critical Tire Pressure matured fault and sends a bus message to the cluster. The cluster will flash "LO TIRE" at a rate of one (1) second on and one (1) second off and send a single chime request at the same rate to the BCM.


NOTE: Anytime the BCM identifies a faulted condition (send matured fault message to cluster), it will register a diagnostic trouble code (DTC).

 

[lagalaxy13]

Also keep in mind that you need to exceed 20-30mph after adding air to activate the sensors and allow the system to read the data before the light will go out.

Thanks for this post Roadrunner. This was my problem. I finally took the car around the block last night to see if it would go out. It did. Got about a mile of drive time. Can't wait till the weather breaks.