In this case there can only be two reasons why the rear sensors are not displayed or not work:
- The first is you have disabled the back by truck or tow (Remember that in this case the button will flash in a special way)
- The second is that the rear sensors are physically disconnected. In this case in addition to the button flashes D4P note that the green LED on the unit will flash 4 times.
Posted in: 2. End user tech support and troubleshooting
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