Acura TSX Engine Oil Pressure Switch: A Complete Guide (2004-2014)
Seeing your oil light flicker? This guide covers the common causes and solutions for your TSX's oil pressure switch.
- Always check your oil level first if the oil light comes on; TSX models can consume oil.
- A flickering oil light with a full oil level points directly to a failing oil pressure switch.
- The switch is located near the oil filter and requires a 24mm deep socket for replacement.
- Do NOT overtighten the new switch, as this can crack the engine block and lead to a catastrophic oil leak.
Is It a Bad Switch or Low Oil?
The most common symptom of a failing oil pressure switch is a flickering or constantly lit oil warning light on your dashboard, especially when your engine's oil level is correct. However, many TSX models, particularly from 2009-2011, can consume oil between changes. Always check your oil level with the dipstick first when the oil light comes on. If the oil level is low, topping it off may solve the problem. 🎬 Watch: Why your oil light might be flashing while driving. If the oil level is full but the light stays on or flickers, the switch itself is the next likely culprit.
VTEC Oil Pressure Switch vs. Engine Oil Pressure Switch
Your Acura TSX has two oil pressure switches. One is for the main engine oil pressure (which controls the dashboard warning light), and the other is for the VTEC system. They are not interchangeable. This guide focuses on the main engine oil pressure switch. A problem with the VTEC switch will usually trigger a Check Engine Light with codes like P2646 or P2647, not the oil can warning light.
🎬 See how to diagnose VTEC codes P2646 and P2647.Choosing the Right Aftermarket Switch
When replacing the oil pressure switch, you have options ranging from OEM (Original Equipment Manufacturer) to various aftermarket brands. For a critical sensor like this, quality matters.
- Top-Tier Aftermarket (e.g., Beck/Arnley, Standard Ignition): These brands have a strong reputation. Beck/Arnley often sources parts from the same manufacturers that supply Acura, providing an OE-equivalent fit and function. Standard Ignition is a well-regarded manufacturer known for quality control in their own facilities. These are often the most reliable aftermarket choices.
- Value-Priced Aftermarket (e.g., Facet, Global Parts, True Tech): Brands like Facet position themselves as OE-equivalent and are made in Italy. While more budget-friendly, their long-term reliability can be less consistent than top-tier or OEM parts. For a part that is inexpensive and easy to replace, some owners may choose this route, but be aware that premature failure is a higher risk.
For this specific part, an OEM or a top-tier aftermarket switch is highly recommended to avoid the false alarm of a flickering oil light and the potential for leaks.
Installation Pro-Tip
The engine oil pressure switch is very easy to over-tighten, which can crack the engine block—a very expensive mistake. The switch uses tapered threads to seal and does not require a lot of force. Hand-tighten the new switch, then use a wrench for about one or two more turns until it is snug. Do not overtighten.
Cost of Replacing an Acura TSX Oil Pressure Switch
| Part Type | Estimated Cost |
|---|---|
| New OEM | $45 - $85 |
| New Aftermarket | $10 - $72 |
| Shop Labor | $50 - $100 |
| Total Professional Replacement | $127 - $149 |
Frequently Asked Questions
Where is the oil pressure switch on a 2004-2014 Acura TSX?
The main engine oil pressure switch is located on the passenger side of the engine, near the rear, just above the oil filter. It has a single wire connector. You can typically access it from underneath the car or through the passenger-side wheel well.
🎬 Watch this step-by-step TSX oil pressure switch replacement guide.Can I drive with a bad oil pressure switch?
It is not recommended. While a faulty switch won't harm the engine, the warning light it triggers could be indicating actual low oil pressure, which is a critical engine emergency. You should confirm the engine has proper oil pressure before continuing to drive.
What tools are needed to replace the switch?
You will typically need a 24mm deep socket or wrench to remove and install the switch. You'll also need tools to safely lift and support the vehicle, like a jack and jack stands.
Are there any recalls for the Acura TSX oil pressure switch?
No, there are no specific recalls for the engine oil pressure switch on the 2004-2014 Acura TSX. There was a warranty extension for some model years related to high oil consumption, which can cause the oil light to come on.
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Technical Specifications
OEM Part Numbers: 37240-PT0-014 37240-P2F-A01 37240-PT0-023 37240-RDM-A01
Connector: 1-Pin. Thread Size: M10x1.25 (Varies, confirm with part). Socket Size: 24mm.
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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.
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