2006-2007 Subaru B9 Tribeca Door Lock & Window Switch: A Buyer's and DIY Guide

Common Symptoms of Failure

When the master switch begins to fail, it can cause a range of frustrating issues. Because the unit controls multiple functions, symptoms can vary. Often, the driver's window switch fails first due to the highest frequency of use.

• One or More Windows Won't Operate: You might find that only one window stops working from the master switch, or that all passenger windows become inoperable. If a single window doesn't work from its own switch or the master switch, the problem is likely the window motor or regulator, but if it works from its local switch and not the master, the master switch is the prime suspect.
• Intermittent Operation: The switches may work some of the time but not others. This can be caused by worn internal contacts or a failing circuit board.
• "Auto" Function Fails: The driver's window has an "Auto" down feature. A common failure is for this one-touch function to stop working, even if the window can still be moved by holding the button down.
• Power Door Locks Inoperative: The integrated power door lock button may stop working, preventing you from locking or unlocking all doors from the driver's side. If other door lock switches in the vehicle still work, the fault likely lies in the master switch assembly.
• Window Lock Button Stuck or Ineffective: The button that disables the passenger window switches can fail, either permanently locking them or not working at all.

Buying a Used Door Lock Switch for Your B9 Tribeca

A used OEM (Original Equipment Manufacturer) switch is often a smart choice, providing the same quality and fit as the original part at a lower cost than a new dealer part. However, there are key things to inspect before buying.

What to Check Before You Buy

• Verify the 'AUTO' Button: This is the most critical check. The driver's window button on your original switch must have the word 'AUTO' printed on it. Ensure the replacement part has this exact marking. A switch without it will not function correctly in your vehicle.
• Inspect the Buttons: Check for excessive wear on the button graphics. While some wear is normal, heavily worn or cracked buttons may indicate a high-mileage or heavily used part that could fail soon. Physically press each button to ensure it moves freely and doesn't stick.
• Examine the Connectors: Look at the electrical connection ports on the back of the switch. The plastic should be free of cracks, and the pins inside should be straight and clean. Avoid any switches with signs of corrosion (a greenish or white crust), as this indicates past water damage and guarantees future problems.
• Check for Water Damage: Spilled drinks are a common cause of failure for these switches. Look for sticky residue, discoloration, or any signs of liquid intrusion around the button seams and on the housing.

Known Issues, TSBs, and Recalls

As of this writing, there are no specific recalls or Technical Service Bulletins (TSBs) from Subaru or the NHTSA that directly address the master window switch for the 2006-2007 B9 Tribeca. However, several recalls exist for other vehicle systems:

• Puddle Lights: A recall was issued for accessory puddle lights which could short circuit when exposed to salt and moisture, affecting some 2006-2012 Tribeca models. While not directly related to the window switch, it highlights potential electrical issues from moisture.
• Hood Latch: A significant recall was issued for the hood lock system, which could fail and allow the hood to open while driving.
• Airbag Inflators: Like many vehicles of this era, the B9 Tribeca was subject to recalls for faulty Takata airbag inflators.

While these don't pertain to the switch itself, it's wise to check if these recall services have been performed on any vehicle you are working on or purchasing.

Cost of a Replacement Switch

The price for a replacement switch can vary significantly based on the source.

Replacement Guide (DIY Difficulty: 1/5)

Replacing the master window switch is a straightforward job that most DIYers can complete in under 30 minutes with basic tools.

1. Pry Up the Switch Panel: Using a plastic trim removal tool or a flathead screwdriver wrapped in tape (to prevent scratching), carefully pry up the front edge of the panel containing the switch.
2. Lift and Disconnect: Once the clips release, lift the panel up. You will see one or more electrical connectors attached to the bottom of the switch.
3. Release the Connectors: Each connector has a small tab that must be depressed to release the lock. Press the tab firmly and pull the connector straight out.
4. Install the New Switch: If the switch is part of a larger bezel, you may need to remove a few small screws to separate it. Otherwise, connect the electrical harnesses to the new switch, ensuring they click securely into place.
5. Test and Reassemble: Before snapping the panel back into place, turn the ignition to the 'On' position and test all functions: every window (up and down), the window lock, and the door locks. Once confirmed, align the panel's clips with the slots in the door and press down firmly until it snaps into place.

Part Numbers & Technical Specifications

This switch is for the Left (Driver's) side only.

• OEM Subaru Part Numbers: 83071XA00A, 83071XA05A. Part number 83071XA05A is a supersession for 83071XA00A, meaning they are interchangeable and the latter is the newer revision.
• Aftermarket Part Numbers: DWS1935 (Standard Motor Products), DWS2324 (Standard Motor Products).
• Key Specifications: The switch assembly has a 19-pin main connector.

Frequently Asked Questions (FAQ)