CDE-SXM145BT has great audio in TUNER mode, but is barely audible in CD and SiriusXM modes. I have tried every menu setting and cannot fix the problem.

Have you had the battery removed at any time before this happened or been jump started ?

This radio is SiriusXM *READY*. You will need to purchase and install the *optional* SiriusXM-Connect Vehicle Tuner kit (tuner, antenna, cables, hardware) specific to your radio - linked below:

SiriusXM Tuner:
SiriusXM SXV300v1 Connect Vehicle Tuner Kit for Satellite Radio

Manual (.pdf):
http://www.clarion.com/us/en/pdf/CZ702_Manual.pdf

Ours was corrected by removing the faceplate and holding in the small red reset button that is located about halfway across the front

Check the fuse in the fuse box of your car and if that doesn't help there is a fuse on the back of the alpine unit. And if this doesn't fix the problem then most likely you have a bad unit.

1. In the Clock priority mode, press and holdTITLE for at least 2 seconds while the time is displayed.The time indication will blink.
2. Turn the Rotary encoder CDE-9846 only) or press "up" and "down" (CDE-9842 only) to adjust the hours while the time indication is blinking.
3. When the hour has been adjusted, press the Rotary encoder (CDE-9846 only) or press MODE (CDE-9842 only).
4. Turn the Rotary encoder (CDE-9846 only) or press "up" and "down" (CDE-9842 only) to adjust the minutes while the time indication is blinking.
5. The time is automatically set 5 seconds after the minute adjustment.
6. The time can also be manually set by pressing the Rotary encoder (CDE-9846 only) or press MODE (CDE-9842 only).

Download Alpine CDE 9842 Manual

Settin Time
1 In the Clock priority mode, press and hold
TITLE for at least 2 seconds while the time is
displayed.
The time indication will blink.
2 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the hours while the time indication is blinking.
3 When the hour has been adjusted, press the
Rotary encoder (CDE-9845/CDE-9843 only) or
press MODE (CDE-9841 only).
4 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the minutes while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by
pressing the Rotary encoder (CDE-9845/CDE-9843 only)
or press MODE (CDE-9841 only).
6. To synchronize the clock to another clock/watch or radio time
announcement, press and hold the Rotary encoder (CDE-9845/
CDE-9843 only) or press and hold MODE (CDE-9841 only) for at
least 2 seconds after setting the "hour." Minutes will reset to 00. If
the display shows over "30" minutes when you do this, the time
will advance one hour.

Or you can ge tthe manual on the link below.

Setting Time

1 In the Clock priority mode, press and hold

TITLE for at least 2 seconds while the time is

displayed.

The time indication will blink.

2 Turn the Rotary encoder (CDE-9845/CDE-9843

only) or press 4 and 3 (CDE-9841 only) to adjust

the hours while the time indication is blinking.

3 When the hour has been adjusted, press the

Rotary encoder (CDE-9845/CDE-9843 only) or

press MODE (CDE-9841 only).

4 Turn the Rotary encoder (CDE-9845/CDE-9843

only) or press 4 and 3 (CDE-9841 only) to adjust

the minutes while the time indication is blinking.

The time is automatically set 5 seconds after the minute

adjustment. The time can also be manually set by

pressing the Rotary encoder (CDE-9845/CDE-9843 only)

or press MODE (CDE-9841 only).

• To synchronize the clock to another clock/watch or radio time

announcement, press and hold the Rotary encoder (CDE-9845/

CDE-9843 only) or press and hold MODE (CDE-9841 only) for at

least 2 seconds after setting the "hour." Minutes will reset to 00. If

the display shows over "30" minutes when you do this, the time
will advance one hour.

Or you can ge tthe manual on the link below.

http://a248.e.akamai.net/pix.crutchfield.com/Manuals/500/500CDE9843.PDF

Maybe you have it muted or a Tape Monitor engaged??? Never troubleshoot anything at high volume. If you can't hear it at medium it's effectively noth there. A flip of a misplaced switch would possibly blow your speakers.

Pasted from the manual:
1 In the Clock priority mode, press and hold
TITLE/ for at least 2 seconds while the time is
displayed.
The time indication will blink.
2 Turn the Rotary encoder (CDE-9846 only) or
press up or down arrow (CDE-9842 only) to adjust the
hours while the time indication is blinking.
3 When the hour has been adjusted, press the
Rotary encoder (CDE-9846 only) or press MODE
(CDE-9842 only).
4 Turn the Rotary encoder (CDE-9846 only) or
press up or down arrow (CDE-9842 only) to adjust the
minutes while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by
pressing the Rotary encoder (CDE-9846 only) or press
MODE (CDE-9842 only).

Page 16 of the manual:
http://vault.alpine-usa.com/products/documents/CDE-9841,%2043,%2045%20OM.PDF

Setting Time
1 In the Clock priority mode, press and hold
TITLE for at least 2 seconds while the time is
displayed.
The time indication will blink.
2 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the hours while the time indication is blinking.
3 When the hour has been adjusted, press the
Rotary encoder (CDE-9845/CDE-9843 only) or
press MODE (CDE-9841 only).
4 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the minutes while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by
pressing the Rotary encoder (CDE-9845/CDE-9843 only)
or press MODE (CDE-9841 only).
• To synchronize the clock to another clock/watch or radio time
announcement, press and hold the Rotary encoder (CDE-9845/
CDE-9843 only) or press and hold MODE (CDE-9841 only) for at
least 2 seconds after setting the “hour.” Minutes will reset to 00. If
the display shows over “30” minutes when you do this, the time
will advance one hour.