What Mazda Has 3rd Row Seating

Okay, let's dive into the world of Mazda vehicles equipped with 3rd-row seating. Specifically, we're talking about the Mazda CX-9 and the CX-90, as these are the primary models offering this feature. This article will focus on the mechanics and tech behind accessing, operating, and maintaining the 3rd-row seats in these vehicles.

Purpose of Understanding the 3rd-Row System

Why bother learning about this? Several reasons. If you're a DIY enthusiast, understanding the 3rd-row system is invaluable for tackling repairs. Imagine a scenario where the seat won't fold down, or the release mechanism is jammed. Having a working knowledge of the system lets you diagnose and potentially fix the problem yourself, saving on labor costs. Furthermore, if you're considering modifications – maybe installing custom storage solutions – knowing the layout and components will help you avoid interfering with critical mechanisms. Even simply knowing how the system is *supposed* to work helps you identify when something is amiss. Knowing the 3rd-row layout and components will allow you to install subwoofers or other entertainment system components without interfering with the fold-flat functionality of the rear seats. This is especially true with electrical systems.

Key Specs and Main Parts

Let's break down the key specs and components common to both the CX-9 and CX-90's 3rd-row seating:

Seat Frame and Structure:

The foundation of the 3rd-row seat is, naturally, the frame. This is typically constructed of high-strength steel to ensure passenger safety during a collision. Key specs include:

Material: High-strength steel (typically specified by grade, such as HSLA steel)
Welding Points: Critical for structural integrity; look for clean, consistent welds. A fractured weld means a significant safety risk.
Mounting Points: Where the seat frame attaches to the vehicle's chassis. These are crucial for proper securement.

Folding Mechanism:

This is where the magic happens. The folding mechanism allows the 3rd-row seats to fold flat, maximizing cargo space. Common components include:

Release Lever/Button: The physical interface you use to initiate the folding process.
Cable System (or Electronic Actuators): Connects the release lever to the locking mechanism. The CX-9 primarily uses a cable system, while the CX-90 may feature electronic actuators in some trims.
Locking Mechanism: Secures the seat in both the upright and folded positions. This often involves a spring-loaded latch and a mating receiver.
Hinges: Allow the seat to pivot and fold. These are heavy-duty hinges designed to withstand repeated use.

Seat Belts and Restraints:

Essential for passenger safety. Key considerations include:

Seat Belt Type: Typically a three-point seat belt system for outboard passengers.
Pre-tensioners: Some models might have pre-tensioners that tighten the seat belt in the event of a collision. These often integrate with the vehicle's Supplemental Restraint System (SRS).
Anchor Points: Where the seat belts attach to the vehicle's frame. Ensure these are secure and free from corrosion.
Headrests: Adjustable headrests that protect occupants in a collision.

Upholstery and Padding:

Contributes to comfort and aesthetics.

Material: Varies depending on trim level (cloth, leatherette, leather).
Padding: High-density foam to provide cushioning.
Stitching: Quality stitching is important for durability and preventing tears.

How It Works

The 3rd-row seat operation is relatively straightforward, but understanding the underlying mechanics is key to troubleshooting. When you pull the release lever or press the button, it activates the cable system (or electronic actuator). This action disengages the locking mechanism, allowing the seat to fold forward. The hinges allow the seat to pivot until it rests in the folded position. To return the seat to the upright position, you simply lift it until the locking mechanism clicks into place, securing the seat. On electric systems, the actuator is a *solenoid* that pulls the locking pin, freeing the seat.

The seat belt system is integrated with the vehicle's overall safety system. In the event of a collision, the pre-tensioners (if equipped) will tighten the seat belts to restrain occupants, while the seat frame provides structural support.

Real-World Use – Basic Troubleshooting Tips

Here are a few common issues and potential solutions:

Seat Won't Fold:
- Check the Release Lever/Button: Make sure it's moving freely and engaging properly. A stuck or broken lever is a common culprit.
- Inspect the Cable System: If it's a cable system, check for kinks, breaks, or loose connections. You can often access the cable by removing a small panel near the release lever. Lubricate the cable with silicone spray.
- Examine the Locking Mechanism: Look for any obstructions or damage to the locking mechanism. WD-40 can sometimes help loosen a sticky latch.
- Electric Actuator: Test the actuator to see if it is receiving power. A multimeter can be useful for checking voltage.
Seat Won't Latch in Upright Position:
- Check the Latch Receiver: Make sure it's clean and free from debris.
- Inspect the Locking Mechanism: Look for any damage or wear to the locking mechanism on the seat frame.
- Adjust the Striker Plate: In some cases, the striker plate (the metal piece the latch engages with) may need to be adjusted.
Seat Belt Issues:
- Check for Obstructions: Make sure the seat belt isn't twisted or caught on anything.
- Inspect the Buckle: Clean the buckle with compressed air to remove any debris.
- Test the Retractor: Make sure the seat belt retracts smoothly. If it's sluggish, it may need to be replaced.

Safety – Highlight Risky Components

Working on the 3rd-row seating system can involve some risks. Here are a few key safety considerations:

Seat Belt Pre-tensioners: These contain a small explosive charge. Never attempt to disassemble or repair a pre-tensioner. Mishandling can cause accidental deployment, resulting in serious injury. If a pre-tensioner is faulty, replace it with a new unit.
High-Strength Steel: The seat frame is made of high-strength steel. If you need to weld or cut any part of the frame, use appropriate safety equipment and follow proper welding procedures. Compromising the structural integrity of the seat frame can have catastrophic consequences in a collision.
Electrical Components (CX-90 with Power Folding): Disconnect the battery before working on any electrical components to prevent accidental shorts or shocks.
Sharp Edges: Be careful of sharp edges on the seat frame and folding mechanism. Wear gloves to protect your hands.
Heavy Components: The 3rd-row seat is heavy. Get help when lifting or moving it to avoid back injuries.

Remember to always consult the vehicle's repair manual for specific instructions and torque specifications. Improperly installed or repaired components can compromise safety.

Understanding the mechanics of the 3rd-row seating in your Mazda CX-9 or CX-90 allows you to perform basic maintenance and troubleshooting. This ensures passenger comfort and helps prevent minor issues from becoming major problems. Remember, if you're not comfortable working on certain components, especially those related to safety systems, it's always best to consult a qualified mechanic.

We have a detailed system diagram available for download. It contains specific information related to the cable routing, locking mechanism, and electrical components. This diagram will be a great asset when performing any diagnostic or repair work. Just let us know you are interested, and we'll provide the download link.