Subaru is famous for its Symmetrical All-Wheel Drive (AWD), a system designed to keep you in control no matter where the road takes you. Whether you are navigating the busy I-10 through Ontario, heading into the San Bernardino Mountains for a weekend escape, or dealing with a sudden California rainstorm, your Subaru’s AWD system is working overtime to keep you safe and stable.

But here’s what many drivers don’t realize: even though Subaru AWD is built to last, it still needs the right care to stay reliable over the long run. At Subaru of Ontario, we see how a few simple maintenance habits can add years to the life of your AWD system and save you money in the process.

Why Subaru’s Symmetrical AWD is Special

Unlike part-time systems that only activate when slip is detected, Subaru’s AWD is always engaged. That means power is constantly being distributed to all four wheels, giving you better grip and stability whether the pavement is dry, wet, or uneven.

Everyday Benefits You’ll Appreciate 🚙

• Balanced handling for safer commutes on Southern California freeways
• Extra traction in sudden rainstorms or light mountain snow
• More control when navigating winding canyon roads
• Even power distribution that reduces stress on your tires
   

This continuous engagement is part of what makes Subaru so trusted — but it also means the system is always working, and that increases the importance of regular maintenance.

How Ontario Driving Conditions Affect Your AWD System

Many Southern California Subaru owners assume that AWD maintenance is only critical in snowy states, but that’s a misconception. The local environment in Ontario and the surrounding Inland Empire poses its own set of challenges.

Local Challenges for AWD Drivers

• ☀️ Hot summers can thin out drivetrain fluids and accelerate wear.
• 🚦 Stop-and-go traffic on the I-10 and I-15 forces the system to constantly adjust traction.
• 🏔️ Mountain getaways to Big Bear or Lake Arrowhead test the AWD with steep climbs and descents.
• 🌧️ Heavy rains during winter months create slick highways where AWD works its hardest.
• 🛞 Rougher roads in older neighborhoods can impact alignment and tire wear.
   

Your AWD system may not face deep snow every day, but the mix of heat, traffic, and terrain in Southern California still takes a toll.

Signs Your Subaru’s AWD May Need Service

Subaru’s AWD system is designed to be durable, but it will give you warning signs when something isn’t right.

Look out for:

• 🔧 Vibrations or shuddering while accelerating
• 🚗 Trouble maintaining traction in the rain
• 🔊 Clicking or clunking noises when turning
• ⚠️ Dashboard warning lights for AWD or traction control
• 🛞 Uneven tire wear, especially if one tire looks more worn than the others

Addressing these symptoms early can prevent costly repairs down the road.

How to Extend the Life of Your AWD System

Caring for your AWD system is easier than you think. The key is consistency and attention to detail.

Top Maintenance Tips for Subaru AWD

• 🧴 Change differential and transmission fluids on schedule. Subaru recommends checking every 30,000 to 60,000 miles depending on driving habits.
• 🔄 Rotate tires every 6,000 miles. Uneven tire wear is the enemy of AWD balance.
• 🛞 Keep tire pressure even. Mismatched pressures can strain the drivetrain.
• ⚙️ Replace tires as a set. If you must replace fewer, ensure they are the same brand, model, and tread depth.
• 👨‍🔧 Schedule regular inspections. Subaru-certified technicians can spot early wear before it becomes a problem.
• 🛑 Avoid aggressive driving. Hard cornering, sudden stops, and rough roads increase stress on the AWD system.
   

Why Subaru-Certified Service is Worth It

Your Subaru’s AWD system is more advanced than it may look. It involves multiple differentials, sensors, and precisely balanced components. At Subaru of Ontario, our certified technicians use factory-approved fluids and diagnostic tools to service your AWD the way Subaru intended.

Generic repair shops may overlook key checks or use non-approved fluids, which can shorten the life of your AWD. When you choose Subaru-certified service, you get peace of mind knowing your AWD is in expert hands.

Local Expert Advice

“Your Subaru’s AWD is a big part of why you bought your vehicle, and the best thing you can do for it is stay ahead on maintenance,” says Jamie Lin, Subaru-certified technician at Subaru of Ontario. “Even simple steps like tire rotations and fluid checks can prevent thousands in repairs and keep your AWD running like new.”

Drive Confidently in Southern California

Your Subaru was built for adventure and peace of mind. Whether you are running errands in Ontario, battling rush-hour traffic, or exploring California’s mountain roads, your AWD system is working hard for you. With the right care, it will keep delivering the stability and confidence you count on for years to come.

Schedule your next service with Subaru of Ontario at 1195 Auto Center Dr, Ontario, CA 91761. Call today or book online to give your Subaru’s AWD system the expert care it deserves.