OBD-II code · Network
U0499 Invalid Data Received From Telematic Control Module
A receiving module detected implausible data from the telematic control unit (TCU). Cellular signal, eCall state or vehicle data values fail plausibility checks and are rejected.
Is it safe to drive with U0499?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- Less likelyGateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Telematic Module
Related codes
- U0496Invalid Data Received From Subscription Entertainment Receiver Module
- U0497Invalid Data Received From Entertainment Control Module — Rear A
- U0498Invalid Data Received From Telephone Control Module
- U049AInvalid Data Received From Door Control Module A
- U049BInvalid Data Received From Tachograph Module
- U049CInvalid Data Received From Battery Charger Control Module A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.