Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Global Telematics Box Module (TBM2)
| Refer to COMPONENT INDEX . |
The TBM2 (2) is the solid state connectivity control module for the VP2R audio system, if equipped, for network connectivity and is located above the left side of the glovebox and to the left of the Passenger AirBag (PAB), secured to a bracket that is attached to the instrument panel carrier.
The TBM2 (2) is connected to the instrument panel wiring harness using one 32-pin wiring harness connector (5) and up to four antenna connectors (3). The Universal Serial Bus cable (USB) (4) is connected between the radio and TBM2 for diagnostic communication between the two modules. The FAKRA antenna connectors make connections to the combination antenna for GPS data and LTE1 data, and the LTE2 antenna for communication on the 4G cellular network, if available in the market.
The TBM2 module is mounted to the TBM2 bracket using four bolts to secure the module mounting bosses (1). The TBM2 bracket is secured to the instrument panel carrier by two bolts, one located at the each end of the bracket.
The TBM2 has an internal cell phone antenna which is used in the event of the vehicle's cell phone module not operating or not operating properly.
The TBM2 incorporates a backup battery (2) with a life expectancy of 5-7 years that will allow the network connectivity system to continue to work in case of vehicle power interruption. If the backup battery becomes discharged, a message may be indicated in the Radio (depending on vehicle configuration) and/or Instrument Panel Cluster (IPC); and a diagnostic code may set in the TBM2. The battery will allow call and data transfer for at least 15 minutes with callback capability for at least one hour after a vehicle emergency.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.