Owner's Manual

TY
12/28/21
NTV-DOC314C
11 | P a g e
FAQ
• For installations with this ZEN processor, make certain that any added amplifier’s ground resistance (reference
vehicle battery ground) does not exceed 1 ohm.
• If you’ve installed a third-party DSP (receiving signal from the ZEN, before the amplifier) and you’re having issues
with audio bleeding from one channel to another, echoing Bluetooth phone calls or any other signal processing
issues, rule out the ZEN first by temporarily bypassing the third-party DSP and running signal directly from the
ZEN to the amplifier(s) and verify the problem still exists before calling technical support.
• VW installs: if the midranges are overwhelming, sound stage is narrow and there is equalization difference
between front and rear channels, set the following bytes in long coding of MIB (using VAG-COM): 4,5,6,7 set to
‘00’. For more information on this, contact NAV-TV.
MIB3 Programming
1. Start the vehicle and allow the MMI to fully boot and verify audio is playing.
2. Insert the MIB3 programmer into the vehicle's OBD port and wait approximately 30 second to 1 minute.
3. The LED on the Programmer should illuminate and the the radio will turn off, and restart.
4. Once the radio begins the restart procedure, remove the Programmer from the OBD port.
5. After the radio restarts, if the Zen is not currently connected, there will be no audio.