Electronics Repair Questions? Ask an Electronics Technician
You can connect up to two Bluetooth devices at a time to the DEH-X4850BT.
If there are any other Bluetooth devices connected to the system, try removing them first, then try pairing the speaker again.
Ok, then there may be a problem with the software on the Pioneer system.
There are no software updates available online, so it will need to be returned to a Pioneer service centre for diagnosis and repair.