Alpine X409-WRA-JK Installation Manual page 21

Troubleshooting Guide Continued
Symptom
5
Headunit will not turn on.
6
Cannot enter SETTINGS
MENU.
8
Only the front speakers are on
for SXM Radio.
9 The vehicle is incorrectly
positioned on the Navigation
display.
CarPlay, Android Auto, or
10 off-road navigation map
positioning issues.
CarPlay, Android Auto, or
off-road navigation vehicle
11
position icon heading in
wrong direction
iPhone or Android phone is
not recognized
12
when connected to the
USB cable.
Volume controls on bezel and
13 steering wheel controls do not
work.
Possible Cause
Incorrect serial number was used
when flashing maestro.
4 pin Maestro data cable is
disconnected or damaged.
OBD2 cable is not plugged in.
Monitor or main harness are not
connected.
Vehicle is in motion or parking
brake is not engaged.
SXM Tuner has not been activated.
Poor GPS signal.
GPS antenna is positioned
incorrectly.
Reverse Signal is not connected or
not reliable.
Loose or disconnected USB cable.
Non-compatible cable.
Dirty charging port on phone.
The setting for External Processor
was turned on.
WRANGLER JK
Remedy
Flash Maestro with correct serial number.
Check for proper connection or
disconnected pins.
Connect OBD2 connector to the OBD2 port.
Check for proper connection or
disconnected pins.
With vehicle in (P)PARK engage the parking
brake. Release the parking brake and
engage the parking brake a second time, as
shown in the Setup Guide on page 20.
Activate SXM Tuner.
Ensure the recommeded GPS antenna route
was used. See page 6.
GPS antenna is obstructed and doesn't have
line of sight to the sky. Perform a factory
reset. The unit will automatically recalibrate.
Ensure that Reverse wire is connected. Also
ensure that no 3rd party interface module(s)
interfere with the Reverse Signal. The head
unit uses the Reverse Signal to achieve
optimal positioning performance.
Check the USB connection behind
the headunit.
Use the cable supplied with the
iPhone or Android phone. Third party
adapters and long extensions may not work.
Only use USB extension that came with the
head unit.
Clean charging port.
That setting should only be checked when
using an external sound processor. When
there isn't one being used in the audio
system it needs to be in the default setting
of off. MENU/SETUP/SYSTEM/EXTERNAL
ACCESSORIES/EXTERNAL AUDIO
PROCESSOR/OFF
Jeep Wrangler
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