A/C System O-Ring and Gasket Kit Guide for the 2016 Scion iM
If your Scion iM's air conditioning is blowing warm, the problem could be as simple as a worn-out O-ring.
- A gradual loss of A/C cooling is the primary symptom of a small leak, often from a failing O-ring.
- Replacing O-rings requires a professional to evacuate and recharge the A/C system with specialized equipment.
- Choose an aftermarket kit made with HNBR material, which is compatible with your Scion iM's R-134a refrigerant.
- There are no major recalls or TSBs for the 2016 Scion iM A/C system's seals.
Is Your Scion iM A/C Blowing Warm Air?
One of the most common reasons for an A/C system to stop cooling is a loss of refrigerant. In the 2016 Scion iM, this is often due to a leak, and the most frequent culprits are the small seals and O-rings that degrade over years of heat and vibration. Before assuming a major component like the compressor has failed, it's wise to check for these smaller, less expensive failure points.
Don't Just Add Refrigerant
If your system is low on refrigerant, it means there is a leak. Simply adding more refrigerant from a DIY can is a temporary fix at best. The new refrigerant will leak out, and you'll be back where you started. Finding and fixing the leak is the only correct, long-term solution.
Symptoms of a Failing A/C O-Ring
Spotting a leak from an O-ring can be straightforward if you know what to look for:
- Gradual Loss of Cooling: The A/C might start cool and then turn warm, or it may lose its cooling ability over a few days or weeks.
- Oily Residue: Refrigerant in the A/C system is mixed with a special oil. A leak will often leave a greasy or oily film on the A/C lines, fittings, or components where the O-ring has failed.
- Visible Dye: Many shops inject a UV-reactive dye into the system to find leaks. If this has been done, you can use a UV flashlight to easily spot a bright greenish-yellow glow at the leak source.
Choosing the Right Aftermarket Kit
For a part like an O-ring and gasket kit, you don't necessarily need to pay a premium for an OEM (Original Equipment Manufacturer) part from a dealer. High-quality aftermarket kits offer comparable performance for a fraction of the price. The key is to choose a kit made from the correct material.
Look for kits that specify they use HNBR (Hydrogenated Nitrile Butadiene Rubber) O-rings. This material is designed to be compatible with the R-134a refrigerant used in your Scion iM and can withstand the temperature and pressure extremes of the A/C system. Most aftermarket O-rings are green to signify they are for A/C use.
Available Brands: Four Seasons & Global Parts
Both Four Seasons and Global Parts (often sold under the UAC brand) are well-known aftermarket suppliers for A/C components. For a simple O-ring kit, both brands are generally considered reliable. The most important factor is ensuring the kit is listed as a direct fit for your 2016 Scion iM to get the correct assortment of sizes. Some users have noted that aftermarket O-rings can sometimes be slightly less "beefy" than the originals, so careful installation is key to ensure a good seal.
Estimated Replacement Costs
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Kit | $26 - $29 |
| Shop Labor (Leak Test & O-Ring Replacement) | $95 - $200 |
| Shop A/C Evacuation & Recharge Service | $150 - $250 |
| Total Estimated Cost | $271 - $479 |
Note: Costs are estimates and can vary based on your location and the specific shop's labor rates. The primary cost of this repair is the labor and the required A/C service, not the part itself.
Frequently Asked Questions
Do I have to replace the whole kit if I only find one leak?
While you only need to replace the specific leaking O-ring, it is often recommended to replace all the seals you have access to while the system is empty. The seals are all the same age, and if one has failed, others may be close behind. The kits are inexpensive, and this can prevent another leak down the road.
Can I replace the A/C O-rings myself?
Physically replacing an O-ring is simple, but the process requires special equipment. It is illegal and unsafe to vent refrigerant into the atmosphere. A professional mechanic must use a recovery machine to evacuate the system before it's opened and then use a vacuum pump and gauges to properly recharge it after the repair. This is not a beginner-friendly DIY job.
Are there any recalls for the 2016 Scion iM A/C system?
No. As of early 2026, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from the NHTSA related to A/C system leaks, O-rings, or gaskets for the 2016 Scion iM. The only recall for this model year concerned incorrect load capacity labels.
What refrigerant does the 2016 Scion iM use?
The 2016 Scion iM uses R-134a refrigerant. This is important to know when selecting O-rings, as they must be compatible. HNBR O-rings are the standard for R-134a systems.
Technical Specifications
OEM Part Numbers: 90069-08007
Kit must contain HNBR (Hydrogenated Nitrile Butadiene Rubber) O-rings compatible with R-134a refrigerant.
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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 iM: