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New Mopar TPMS question

Laz

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Does anyone know if these need to be programmed if I’m installing new ones with my new wheels?
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Rhinebeck01

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Does anyone know if these need to be programmed if I’m installing new ones with my new wheels?
@Laz

No, no programming of those, Schrader 20398 OE TPMS sensor's is needed.

In regard to your JL's TPMS:

How does the JL/JLU know which tire/rim/wheel is where .....

Well, there are 3 sensors on the chassis that monitor the 4 TPMS Sensors found on the 4 tire (rim) positions.

Info from the 3 chassis sensors is transmitted to the Wireless Control Module. There is no need for a 4th chassis sensor as the computer uses the process of elimination to determine the fourth tire location.

Yes, your JLU/JL knows exactly which rim is where, usually within seconds of a tire rotation for example. Yes, It's all done automatically.

There is a TPMS sensor in the factory mounted spare but it is not read by a chassis sensor/ considered by the computer until it is placed in one of the 4 tire positions.
 
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Laz

Well-Known Member
First Name
Tom
Joined
Jun 21, 2018
Threads
27
Messages
130
Reaction score
20
Location
New Hampshire
Vehicle(s)
2018 JLUS
@Laz

No, no programming of those, Schrader 20398 OE TPMS sensor's is needed.

In regard to your JL's TPMS:

How does the JL/JLU know which tire/rim/wheel is where .....

Well, there are 3 sensors on the chassis that monitor the 4 TPMS Sensors found on the 4 tire (rim) positions.

Info from the 3 chassis sensors is transmitted to the Wireless Control Module. There is no need for a 4th chassis sensor as the computer uses the process of elimination to determine the fourth tire location.

Yes, your JLU/JL knows exactly which rim is where, usually within seconds of a tire rotation for example. Yes, It's all done automatically.

There is a TPMS sensor in the factory mounted spare but it is not read by a chassis sensor/ considered by the computer until it is placed in one of the 4 tire positions.
Thanks so much. Very useful info. I appreciate it.
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