2020 Ram Tpms
Hello I have a customer with a 2020 ram 1500 big horn they recently purchased aftermarket wheels and tires with tpms sensor pre-installed. They came to us because the tpms light is on and the sensors aren't reading. The sensors in the wheels are autel mx sensors. I reprogrammed the sensors to verify they are correct for the vehicle. I attempted to preform the drive cycle in service data to pair them to the vehicle. They would not pair. System scan shows nothing that would prevent new sensors from learning. I'm clearly missing something here, but I'm coming up dry with service info. Thanks in advance
Need to get past the security gateway to get them to work.
Hello Kyle, Was the spare tire equipped with TPMS also? Are the tire dimensions larger than stock? Maybe Autel would be the best ones to ask about this issue.
No tpms in the spare and tires and wheels are the same size.
Go in with your scan tool and see what the sensors identification numbers are for each sensor and if they match. If they don’t match, try manually entering in each sensors identification number into the vehicle.
Had the same issue, had to use oem sensors. Apparently ram changed there frequency in 19 or 20.
Then you have a Autel TPMS tool. Did they trigger when selecting the vehicle? To program, the tires would have been deflated to 0 psi. Also make sure the tool is up to date as there may be missing options using an different Hz. I use Autel mx sensor 1's and have no problems.
They could have updated there there program by now, I had this issue 2 years ago. I was using mx sensor 1 also.
I do have the autel tpms tool as well as a snap on tpms4. I did deflate the tires when programming them. I'll double check the software version on the tool. Thank you.
I have had similar issues with Chrysler and aftermarket TPMS sensors. Use OEM.
make sure you select the correct one, with the Autel tool. DT or DH. went crazy, on a similar truck
You have to have a tpms tool compatible with FCA Auto Auth and with the serial number registered on the account so the tool can actually get past the secure gateway to write the tpms data, other wise your just going to waste your time. I have the Autel ITS600 and it works with no problem on secure gateway equipped vehicles. I have used the snap on and Ateq tpms tools and they would not write the…
The thing that confuses me is service info says new sensors will be learned just by driving. It don't say anything about having to write the tpms. I have a maxisys elite also do you know if that's something the elite can do?
It sounds like you are past that point, but one thing that can be done if installing a 2nd set of wheels is to copy the original sensors when programming the sensors. That way at least in theory the vehicle should not need to learn any new ID's. That being said I have had a couple vehicles over the years that Autel did not seem to work properly, and we needed to take them out and put other…
O wow I can't believe I overlooked that option. I never even thought of I'll get ahold of the customer as hopefully they still have the factory wheels with the original sensors thank you.
One note on that- we use Autel frequently, and I was under the impression that once you program the sensors you cannot change the programming in the sensors? Am I wrong on that? I would have thought you would now need to use new sensors to make that idea work. Will be interesting to see how you make out.
You can reprogram the sensors over and over, I wondered the same thing so tried it.
You may need O.E sensors to meet protocol for the gateway. Trying to find what Hz they are on.