This issue is found in the following make/model(s): 8.4" RA3 and RA4
2014+ Jeep Grand Cherokee Summit Trailhawk SRT & Cherokee
2013+ RAM 1500 2500 3500 Chassis Cab
2014+ Dodge Durango
2015+ Dodge Challenger
2015+ Chrysler 200
2015+ Chrysler 300
2013+ Dodge Viper SRT
2015+ Dodge Charger
Summary of Issue
Any Uconnect 3 Upgrade from us will include a C-911 dummy cable that will prevent that error message from happening for vehicles that do not have the Uconnect 3G antenna (Purple). If this occurs with the antenna or the dummy cable plugged in. Proceed to the next section describing the "Sierra Wireless Card Failure".
If the vehicle is a 2018 (except the Jeep Cherokee) then putting an RA3 or RA4 into the vehicle will throw the error message all of the time, regardless of the antenna being plugged in, even the dummy cable. A 2018 vehicle will require a VP3 or VP4 Canada model to prevent that message, or at minimum a 2018 part number radio (Which in this case will be a Uconnect 4 because all vehicles that had a Uconnect 3 went to the Uconnect 4 in 2018 EXCEPT the Jeep Cherokee).
Sierra Wireless Card Failure
The Sierra Wireless Card Failure is becoming a known issue. Symptoms must match all of the following.
Error message stating "Vehicle phone requires service. Please contact your dealer"
GPS is not tracking location properly, "way off course". Prior to a complete failure, it may be a few miles off, or even a few states... but a complete Failure results in USA models to become fixed on "S Flores St. San Antonio, Texas" and some Models become fixed on "Rue Berri, Montreal Quebec". However, Canadian Part numbers will never experience this issue, as they do not have a "Sierra Wireless Card" because Uconnect services were not available for Canada.
Under "Where Am I" when GPS is clicked, the signal bars below "Accuracy" will have no reception, and quite possibly some or all of the details about Latitude, Longitude, Altitude, Accuracy will be zero.
Most importantly, if you experience all of these symptoms, DO NOT try to update the software to clear any problems. If you take your vehicle to the dealership, and they want to try an update, do so at your own risk, but the following will happen 99% of the time, so it's better to refuse. If you do, or did do an update, the radio will fail at Step 11: Sierra Wireless, and it results in a permanent cycle of requesting an update, and will always fail if given one. When this happens, it must be sent in for repair, or replaced entirely. These radio units are quite expensive, so sending it in for a repair is a preferred economical option.