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.
DTC B2806: No Response Network Management Message (Front Display): General Description
"A/V & NAVIGATION HEAD UNIT" (HU, Head Unit) transmit/receive A/V operation data to "FRONT MONITOR" via M_CAN communication and has built-in voice recognition function and navigation.
There are "A/V & NAVIGATION HEAD UNIT", "AMP", "MTS MODULE", "FRONT MONITOR", "REAR MONITOR LH", "REAR MONITOR RH", "FRONT DIS SWITCH", "REAR AUDIO SWITCH", "AROUND VIEW UNIT", "CAMERA MODULE", "INSTRUMENT CLUSTER", "ANALOGUE CLOCK" that are multi-media control units which configures M_CAN communication network.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.