Description
Genuine Acura / Alpine Factory Navigation DVD Drive
For sale is a genuine OEM Acura GPS Navigation DVD-ROM Drive / Navigation Computer, manufactured by Alpine for the third-generation Acura TL.
Part Number
39540-SEP-A420-M1
Also searched as:
- 39540SEPA420M1
- 39540-SEP-A420
- 39540 SEP A420 M1
- SEP-A420-M1
- Acura 39540 SEP A420
This is the factory navigation computer/DVD drive, not the dashboard LCD display or radio.
The navigation unit reads the factory Acura navigation DVD and supplies navigation data to the vehicle’s factory display.
Acura service information confirms that the TL navigation DVD unit is accessed from the right side of the trunk.
VEHICLE FITMENT
Acura TL
Known direct applications for this exact 39540-SEP-A420-M1 unit:
- 2004 Acura TL
- 2005 Acura TL
- 2006 Acura TL
For vehicles equipped with the factory navigation system.
Compatible transmission configurations can include both automatic and manual TL models depending on original equipment.
Important
This unit is not required on TL models that were not originally equipped with factory navigation.
Always compare the number on your existing navigation unit before purchasing.
FITMENT WARNING
Acura used different navigation hardware and revisions throughout the third-generation TL.
Do not purchase based only on:
- Vehicle year
- Dashboard appearance
- Screen appearance
The safest match is:
39540-SEP-A420-M1
The unit should visually and electronically match the original navigation computer installed in the vehicle.
OEM / RELATED ACURA NUMBERS
The Acura parts catalog identifies the earlier factory navigation unit family as:
- 39540-SEP-A41
- 39540-SEP-405
with 39540-SEP-405 listed as replacing 39540-SEP-A41 for certain 2004 Acura TL configurations.
The 39540-SEP-A420-M1 marking is commonly found on later Alpine production/navigation computers used in 2004–2006 TL vehicles.
IMPORTANT
Do not automatically assume 39540-SEP-405, A41, A410-M1, or A420-M1 are interchangeable without confirming the original unit.
Match the exact face/label number whenever possible.
MANUFACTURER
Alpine Electronics
Acura’s OEM navigation system documentation identifies the navigation DVD unit as an Alpine component.
The internal DVD loader family is also identified in specialist repair sources as Alpine Series 2 / DV36T02C hardware.
CONDITION
TESTED WORKING
Unit has been inspected/tested prior to sale and is being sold as a functioning used OEM component.
Normal cosmetic wear from previous installation may include:
- Surface scratches
- Scuffs
- Dust
- Label wear
- Installation marks
- Minor discoloration
These are normal for a used electronic component.
Please review all listing photographs carefully.
NAVIGATION CODE NOTICE
SECURITY / NAVIGATION CODE MAY BE REQUIRED
Acura navigation computers may request a navigation security code after:
- Battery disconnection
- Unit replacement
- Installation into another vehicle
Several current sellers specifically advertise this exact unit with code, while others sell it as an unlocked unit.
If your unit includes the code:
Add prominently:
NAVIGATION SECURITY CODE INCLUDED
If you do not have the code:
Use:
Security code is not included unless specifically shown or stated. Buyer may need to obtain the navigation code through Acura using the vehicle/unit information.
Do not promise that the unit is unlocked unless you have verified it.
NAVIGATION DVD / MAP DISC NOTICE
The navigation system uses a separate factory map DVD.
If your unit includes the disc:
Add:
Navigation DVD / map disc included as shown.
If no disc is included:
Use:
Navigation DVD / map disc is NOT included unless specifically shown in the listing photographs.
The navigation DVD version and map coverage may vary by year.
COMMON FAILURE SYMPTOMS
A failed Acura TL navigation DVD computer can cause:
- Navigation screen fails to load
- Navigation continually restarts
- System freezes
- DVD cannot be read
- “Disc reading error”
- Navigation does not boot
- Map information fails to load
- Intermittent navigation operation
- Unit repeatedly resets
- Navigation screen displays error messages
Owner reports for the 2006 TL specifically describe intermittent navigation restarting associated with the trunk-mounted DVD unit.
These symptoms can also be caused by:
- Damaged navigation DVD
- Wiring problems
- Low vehicle voltage
- Display failure
- GPS antenna issues
- Other navigation-system faults
Proper diagnosis is recommended before replacing the unit.
INSTALLATION
The navigation computer is located behind the right-side trunk access panel on factory-navigation-equipped TL models. Acura’s service procedure identifies this location when servicing the navigation DVD-ROM.
Professional installation is recommended if the buyer is unfamiliar with Acura electronics.
After replacement, the system may require:
- Navigation security code entry
- Initial system boot
- Navigation DVD loading
- Map matching/calibration
Acura’s service procedure specifically notes that map matching must be performed after DVD-ROM replacement.
WHAT IS INCLUDED
1 × Acura / Alpine Navigation DVD Computer
Part:
39540-SEP-A420-M1
Only components shown in the listing photos are included.
Unless specifically shown, the listing does not include:
- Dashboard navigation screen
- Radio
- GPS antenna
- Wiring harness
- Mounting bracket
- Navigation DVD
- Security code card
- Other navigation components
WARRANTY
Covered by the Oz’s Garage 30-Day Replacement Warranty.
Because this is a used electronic component, proper diagnosis and installation are required.
Warranty does not cover:
- Incorrect diagnosis
- Wrong application
- Installation damage
- Electrical shorts
- Voltage problems
- Water damage
- Physical damage
- Opening or tampering with the unit
- Internal modifications
- Damage caused by a defective navigation DVD
- Labor
- Programming
- Diagnostic fees
Please verify fitment before ordering.
SHIPPING
The navigation computer will be carefully packaged to protect the:
- DVD mechanism
- Electronic boards
- Connectors
- Aluminum housing
during shipment.
Usually ships within 1–2 business days.
🌎 Worldwide shipping available.
Tracking will be provided when available.
International buyers are responsible for applicable:
- Import duties
- Customs taxes
- Brokerage charges
- Local fees
WHY BUY FROM OZ’S GARAGE?
- Genuine used OEM parts
- Hard-to-find electronics
- Discontinued automotive components
- Tested components when specified
- 30-Day Replacement Warranty
- Worldwide shipping available
- Usually ships within 1–2 business days






