Scion FR-S Serpentine Belt Replacement Guide (2013-2016)
Keep your FR-S running smoothly by understanding when and why to replace your serpentine belt.
- Inspect your belt for cracks or fraying at every oil change.
- Squealing is the first sign of a problem; don't ignore it.
- High-quality aftermarket brands like Gates, Continental, and Dayco are reliable alternatives to OEM.
- While replacing the belt, always check the tensioner and idler pulleys for noise or wobble.
Is Your FR-S Serpentine Belt Failing?
A serpentine belt is a wear-and-tear item, meaning it needs to be replaced as part of regular maintenance. Most belts last between 60,000 and 100,000 miles, but you should inspect yours regularly. Look for cracks, fraying, glazing (a shiny surface), or missing ribs. Any of these signs mean it's time for a replacement.
Common Failure Symptoms
- Squealing or Chirping Noises: This is the most common sign. The noise may be worse when you start the car or turn on the A/C.
- Power Steering or A/C Failure: If the belt breaks, these systems will stop working immediately.
- Engine Overheating: The serpentine belt drives the water pump. If it fails, coolant will not circulate, causing the engine to overheat quickly.
- Battery Warning Light: The belt spins the alternator to charge the battery. A broken or slipping belt will cause the charging system to fail, triggering the battery light.
Choosing the Right Aftermarket Belt
For the Scion FR-S, the original equipment (OEM) belt is high quality, but top-tier aftermarket brands offer similar or even better performance, often at a lower price. Since the FR-S has a Subaru-built engine, brands that are OEM suppliers for Japanese vehicles, like Bando or Mitsuboshi, are excellent choices. However, Continental, Dayco, and Gates are all reputable manufacturers that produce quality belts for this car.
- Good Tier (Standard Replacement): A standard Dayco or Gates Micro-V belt is a reliable and cost-effective choice for a daily driven FR-S. These meet or exceed OEM specifications and provide a long service life.
- Better Tier (Performance/HD): For enthusiasts or those who drive their cars hard, a heavy-duty or performance-oriented belt from Continental or Gates can offer better resistance to heat and stretching at high RPMs.
Pro Tip: While replacing the belt, it's a good idea to inspect the tensioner and idler pulleys. Spin them by hand; if they feel rough or make noise, they should be replaced at the same time to prevent them from damaging the new belt. A failing tensioner is a common cause of belt noise.
Known Issues, Recalls, or TSBs
Searches for recalls and Technical Service Bulletins (TSBs) related specifically to the serpentine belt on the 2013-2016 Scion FR-S did not reveal any specific campaigns. The primary recall for this vehicle generation concerns engine valve springs on 2013 models, which is unrelated to the accessory drive belt. Owners have reported belt squealing, but this is often traced back to normal wear, a worn tensioner, or contaminants on the pulleys rather than a specific part defect.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Belt | $35 - $50 |
| New Aftermarket Belt | $25 - $59 |
| Shop Labor | $85 - $125 |
| Total Professional Replacement | $126 - $173 |
Frequently Asked Questions
How often should I replace the serpentine belt on my FR-S?
You should visually inspect the belt at every oil change. A general replacement interval is every 60,000 to 100,000 miles, but it should be replaced sooner if you see any signs of wear like cracking, fraying, or glazing.
Is an OEM belt better than an aftermarket one for my FR-S?
Not necessarily. While the OEM Toyota/Subaru belt is good, top aftermarket brands like Continental, Gates, and Dayco are well-regarded and often provide equal or better quality. For Asian vehicles, Bando and Mitsuboshi are also top-tier choices.
Can I replace the serpentine belt myself?
Yes, this is a DIY-friendly job for someone with basic mechanical skills and tools. The tensioner is accessible from the top of the engine bay. You will need a 14mm wrench or socket to release the tension on the belt. Always make sure to route the new belt correctly.
My new belt is squeaking. What's wrong?
If a new belt is squeaking, the problem is likely not the belt itself. The cause could be a weak tensioner, misaligned pulleys, or fluid/dirt contamination on the pulleys. Thoroughly clean the pulleys before installing the new belt. If the noise persists, have the tensioner and pulley alignment checked.
Helpful Videos
Technical Specifications
OEM Part Numbers: SU003-02202
The 2013-2016 Scion FR-S uses a single multi-rib (poly-v) serpentine belt to drive the alternator, water pump, and A/C compressor.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Scion FR-S: