U0499Invalid Data Received From Telematic Control Module
- Generic OBD-II code · Network
- How the car detects it
- U0499 means the telematic control module, which carries the cellular modem for remote services and, in the EU, the 112 eCall required by Regulation 2015/758, sends data a receiver rejects. GM's 2025 tables (25OBDG04B) let the object calculation module EOCM3 check ARC, checksum or MAC on the telematics unit's precise positioning frames (heading, latitude, longitude): 6 of 10 faulty, judged over 8 s of a 10 s window, 9-16 V, partial network on, over 5 s after reset; Type D, no MIL, Super Cruise and adaptive cruise switch off. Stellantis (08-216-26, 2026 Charger; S268A000004, 2026 Cherokee) finds U0499-00 in the BCM, to be solved by TBM software, not by new parts. U0198 is lost contact.
- What you may notice
- Super Cruise or adaptive cruise unavailable on GM vehicles
- Connected services or an infotainment service message
- Often no noticeable effect, code cannot be cleared
- Likely causes
- LikelyTelematics module software sending faulty or unprotected frames, fixed by an update
- PossibleCorrupted positioning data from the telematics unit (GPS antenna or receiver issues)
- RareInternal fault of the telematics module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.