(05-22-2023, 08:38 AM)iamyxy Wrote: 1. i-TPMS and d-TPMS cannot be used simultaneously, only one can be selected.

2. The frequency of the TPMS needs to be the same as the frequency of the car key, because the CEM (central electronic module) receives the TPMS signal through an antenna on the roof (shared with the remote control antenna).

3.  After the installation is completed, you can click on the CCD (central display screen) to calibrate the tire pressure. At this time, it is best for the vehicle to drive at a higher speed, but it should not exceed 80Km/h. This process is TPMS self-learning, and the tire pressure will display a number after success.

4. In rare cases, Volvo's tire pressure monitoring tools are required to learn, which simply means writing the ID, temperature, tire pressure and other data of the tire pressure sensor into CEM storage.

(07-01-2023, 01:18 AM)Power6 Wrote: quattro4awd... hmmm interesting, the VCM is what processes the signals for the TPMS, and the keyless entry and basically everything wireless in the car. Hard to know what that error means and what should be done about it. My first thought is software updates or otherwise ugh...dealer diagnosis time :-( 

BTW no worries on the 433 vs 434...just depends on semantics, industry seems to call it "433 Mhz" mostly, when the actual freq is 433.82Mhz, some places you might see that rounded up to 434Mhz, it's the same thing.

On the others... I end up hearing from a bunch of people trying to get the TPMS working, and 100% of the time so far, when they solve it, it's the sensors. They get new ones, different ones...and it works. It's a little bit hard to get sensors compatible I think because: You have a car that doesn't have TPMS sensors so you can't just "look it up" to get the right sensor (but 2016 XC90 compatible should work, and the proper 433/315 Mhz) as well as the older chassis P3 Volvos used a different sensor, so one compatible with those Volvos I believe is not compatible with the SPA Volvos. I do think the SPA Volvos use a Schrader brand TPMS sensor, which may be helpful for compatibility. There is not any specific clear info out there on exact spec or protocol of TPMS, just a bunch of fluff.

(06-17-2023, 10:29 AM)ztsoft Wrote: After installed compatible sensors and modified the configurations (019-03;020-08;267-01), the tire pressure cannot be displayed, and it has been a long and long drive. I read the DTC information of the CEM, and the information as follows.



OrBit DTC Report for YV
06/17/2023, 17:16:51

BCM2:
C0563 - **No description found in ECU database**
C10D0 - **No description found in ECU database**

CEM:
C11062 - Right Rear Tire Pressure Sensor and Transmitter Assembly- System Programming Failures- Not configured
C11060 - Left Rear Tire Pressure Sensor and Transmitter Assembly- System Programming Failures- Not configured
C11058 - Right Front Tire Pressure Sensor and Transmitter Assembly- System Programming Failures- Not configured
C11056 - Left Front Tire Pressure Sensor and Transmitter Assembly- System Programming Failures- Not configured

(06-19-2023, 02:06 AM)ztsoft Wrote:

(06-19-2023, 01:25 AM)mccoy0007 Wrote: After install the so-called OEM 31362304 from Taobao, the Chinese version of Ebay, I have experienced same codes. I have driven my XC90 around 15 mins I got a pop-up window remind me that "failed to calibrate, try again?". Yellow tire Pressure warning light keep illuminated. 
The seller provides the sensor IDs and advise me to write them to Sensus system, I will try that later today using Orbit. 
However, I doubt whether this could help. If that were the case, I could only assume that something is wrong with the sensors. Since there's no guarantee for the so-called OEM quality sensors.

I got same issues. But I already wrote IDs to Sensus system using Orbit, but it was useless. After this weekend, I driven over 50 miles, it always showup  "failed to calibrate, try again?".

(07-07-2023, 09:40 PM)Power6 Wrote: I would start the sensor list, but quattro4awd bought the same sensors I did and his don't work yet! It sounds like they are either wrong or faulty though, by the "failed to calibrate" message. I feel like I should wait on recommending those until we know what's up. The Velospinner brand only seem to be available in the USA anyways.

quattro4awd: Yup if you don't see any IDs in there, they aren't learning. That's why I don't reccomend programming the IDs, at least from what I know right now. the IDs showing up is your clue that the sensors are good, the learning worked. But of course it's not working in your case...

One thing to try here...sounds simple, but connect OrBit, and reset the VCM. ECU Tools tab, choose VCM in Active ECU dropdown, click the "Reset ECU" button. This one will cause OrBit to reconnect (the VCM is the diagnostic gateway). You'd be surprised...the ECUs can run a long time with some software fault, and if the car never loses power like a flat battery or such, the "troubled" ECU can run a looooong time wit some little fault in running memory or such, otherwise working fine. I get to see all the wierd stuff via supporting OrBit, and it pops up from time to time, sometimes ECUs that were working fine, no faults in the car, but yet don't respond at all to diagnostics when OrBit is connected, in some cases reset doesn't even work, only disconnect/reconnect battery or pull the ECU fuse will "reboot" it and bring it back to good.

Anyways, it might not fix anything but worth a try!