TSB: 09-014/08

2008 MAZDA3 - AUDIO VOLUME LEVEL UNSTABLE

APPLICABLE MODEL(S)/VINS

2008 Mazda3 vehicles (including Mazdaspeed3) with VINs from JM1BK******100088 to JM1BK******141738 (produced from January 7 to March 28, 2008)

DESCRIPTION

On some vehicles, customers may report irregular bass operation from the audio unit where it is amplified abnormally or cuts out, regardless of the ALC (ON/OFF) or BASS setting. Concern may be most noticeable when volume level is set to 35 or more.

Customers having this concern should have their vehicle repaired using the following procedures.

VERIFICATION PROCEDURE

1. Verify vehicle is subject to concern by the following:

• Vehicle is in subject VIN range.

• With ignition switch in ACC or ON position and audio system on, check the software version of the audio system by pressing and holding AUDIO CONT knob and Preset 1 button. The software version is shown in the information display.

2. Determine software version of the audio system.

Original Software	Updated Software
Ver.1.00M3Su	Ver.1.01M3Su (or higher)
Ver.1.00M3Cu	Ver.1.01M3Cu (or higher)
Ver.1.00D3Su	Ver.1.01D3Su (or higher)
Ver.1.00D3Cu	Ver.1.01D3Cu (or higher)

• If the software version is updated, continue diagnosing the problem using the Workshop Manual.

• If the software version is original, go to step 3.

3. Determine the Part Number of the audio unit.

• If the software version is 1.00M3Su or 1.00D3Su, go to step 5.

• If the software version is 1.00M3Cu, determine if the audio system has BOSE sound, then go to step 5. There is a possiblity of two different audio units with this software version - with and without BOSE sound. With BOSE sound, BOSE SOUND will be displayed in the information display when the ignition is first turned on and BOSE will be indicated on the front door trim speaker cover.

• If the software version is 1.00D3Cu, go to step 4. There is a possiblity of two different audio units with this software version. The audio unit will need to be partially removed to determine the part number.

4. Verify audio unit part number:

1. Remove the decoration panel. Refer to MS3 online instructions or Workshop Manual section 09-17 DECORATION PANEL REMOVAL/INSTALLATION.

2. Loosen the two screws on the dashboard center panel. Refer to MS3 online instructions or Workshop Manual section 09-17 DASHBOARD CENTER PANEL REMOVAL/INSTALLATION.

3. Remove the two screws for the center panel (audio) unit.

4. Pull the center panel unit out enough to view the part number label.

   

5. Note the part number to order.

6. Reassemble in the reverse order.

5. Order the appropriate exchange part from the PARTS INFORMATION either by the software version or the part number of the audio unit.

• In order to receive an exchange component, the dealer must complete and fax a Mazda Audio Exchange Order form, part number 9999-95-032J-R9 downloadable from MStore, to UNITED RADIO (Automotive Division) at (800)701-3874. It can also be done online at www.urdealerservices.com. The dealer must completely fill out each section of the Audio Exchange Order form that pertains to the unit being exchanged. An exchange unit will be shipped in a protective/reusable carton to the dealer within 24 hours or the next working day following the order.

• After replacing the unit, please return the failed unit at your earliest convenience to keep the parts flow process moving for this service bulletin. Return the unit along with a copy of the completed Audio Exchange Order Form in the original reusable carton back to UNITED RADIO at 5705 Enterprise Pkwy., E. Syracuse, NY 13057. Components shipped without a copy of the Audio Exchange Order form are subject to charge back.

• Ship the defective unit via UPS or parcel post (prepaid).

• The servicing agency must receive the returned unit within 30 days of receipt of the exchange unit.

• If the defective unit is not return or received after the 30th day, Mazda will issue a debit not to exceed the replacement cost of the exchange component.

• Mazda will also issue a debit for the cost of the exchanged audio component, if the incorrect model is sent back to the servicing agency.

REPAIR PROCEDURE

1. Record the customer's radio presets.

2. Remove the center panel unit. Refer to MS3 online instructions or Workshop Manual section 09-20 CENTER PANEL UNIT REMOVAL/INSTALLATION.

NOTE: Verify replacement part number matches the part number of the original audio unit.

3. Disassemble the center panel unit. Refer to MS3 online instructions or Workshop Manual section 09-20 CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.

4. Reassemble the center panel unit with the exchange part in the reverse order.

5. Reinstall the center panel unit in the reverse order.

6. Enter the customer's radio presets.

7. Verify repair.

PART(S) INFORMATION

WARRANTY INFORMATION

NOTE:

• This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.

• This repair will be covered under Mazda's New Vehicle Limited Warranty term.

• Additional diagnostic time cannot be claimed for this repair.