2011-2013 INFINITI M37 Engine Oil Pressure Switch Guide
Understanding the oil pressure light on your M37 and how to choose the right replacement switch.
- The M37 uses a simple pressure switch, not a variable sensor; its only job is to turn on the warning light at very low pressure.
- Symptoms include a flickering or constant oil light, or an oil leak from the switch itself.
- Never ignore an oil pressure light; always check the oil level immediately as it could be a real emergency.
- Aftermarket brands like Beck Arnley and Facet offer reliable, OEM-equivalent quality replacements.
Is Your Oil Pressure Light On?
Seeing the oil pressure warning light on your INFINITI M37 dashboard can be alarming. The cause could be serious, like dangerously low oil levels, or it could be a simple electrical issue like a faulty oil pressure switch. This switch is known to fail in a few ways: it can start leaking oil, it can send false signals causing the light to flicker or stay on, or it can fail to warn you when there is a real oil pressure problem. Because the VQ37VHR engine in your M37 has known issues with oil gallery gaskets that can cause a genuine loss of pressure, ensuring this switch works correctly 🎬 Learn more about the VQ37 oil gallery gasket failure issue is very important.
Symptoms of a Failing Oil Pressure Switch
A bad oil pressure switch can create confusing symptoms. Here’s what to look for:
- Oil Pressure Light Flickering: The light may flash on and off, especially during turns, acceleration, or braking.
- Warning Light Stays On: The oil light may remain on even when you have checked the oil level and it is correct.
- Leaking Oil: The switch itself can fail and leak oil. You might notice an oily residue on or below the switch on the engine block.
- Gauge Reads Incorrectly: While the M37 has a simple warning light, a faulty switch can cause it to behave erratically.
Important Recalls for 2011-2012 M37 Owners
While there are no recalls for the oil pressure switch itself, be aware of two related safety recalls for early model years: one for a fuel pressure sensor that could leak fuel, and another for oil cooler bolts that could break and cause a major engine oil leak. Check with an INFINITI dealer to see if your vehicle is affected.
Choosing the Right Aftermarket Switch
You do not need to buy an OEM switch from the dealer to get a quality part. Many aftermarket brands offer reliable replacements that meet or exceed original specifications. The key is to choose a reputable brand.
Tier 1: OEM-Equivalent Quality
These brands have a strong reputation for providing parts that are often sourced from the same manufacturers as the original equipment. They are a reliable choice for a direct, quality replacement.
- Beck Arnley: Specializes in parts for foreign nameplate vehicles and is well-regarded for sourcing OEM-quality components for Japanese cars.
- Facet: A European manufacturer known for producing OE-equivalent switches and sensors with a focus on quality materials and manufacturing.
Tier 2: Reputable Aftermarket Brands
These are established brands in the aftermarket industry known for producing a wide range of parts. They offer a good balance of quality and value.
- Standard Ignition (SMP): A long-standing brand. For best results, stick to their standard (red box) or premium Blue Streak lines, as their economy "T-Series" is considered lower quality.
- Vemo: A German brand that produces a wide array of electrical components and sensors, often positioned as an OE-quality alternative.
Tier 3: Value-Oriented
Brands like Global Parts and Rostra Powertrain fall into this category. They can provide a functional replacement at a lower cost, but may not have the same long-term durability or stringent quality control as higher-tier brands.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $24 - $39 |
| New Aftermarket | $14 - $41 |
| Shop Labor | $100 - $175 |
Frequently Asked Questions (FAQ)
Can I drive with a bad oil pressure switch?
It is not recommended. The problem is that you cannot be sure if the warning light is a false alarm from a bad switch or a true warning of low oil pressure. Driving with low oil pressure can destroy your engine in minutes. If the light comes on, you should stop the vehicle as soon as it is safe and check your oil level.
Is replacing the oil pressure switch a DIY job?
Yes, for a mechanically inclined person, this is a relatively easy job. It involves safely lifting the vehicle, locating the switch on the engine, disconnecting the wire, and using a wrench or special socket to replace the switch. It typically takes less than an hour.
🎬 See this walkthrough for replacing the switch with hand toolsWhere is the oil pressure switch located on the M37? 🎬 Watch: How to perform a manual oil pressure test
The oil pressure switch is located on the engine block. On the VQ37VHR engine, it is typically accessible from underneath the vehicle. You will need to raise the car to gain access.
Will a bad oil pressure switch cause a Check Engine Light?
Usually, a bad oil pressure switch will only trigger the red oil pressure warning light. However, a fault in the switch's electrical circuit could potentially trigger a Check Engine Light with codes like P0520-P0523. More commonly, actual low oil pressure (which a bad switch might not report) can cause other codes related to engine timing, such as P0011 or P0021.
Helpful Videos
Technical Specifications
OEM Part Numbers: 25240-4M40E 25240-4M400
Single-pin electrical connector, threaded body for engine block mounting.
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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.
- INFINITI M37:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Oil Pressure Light On?
- Symptoms of a Failing Oil Pressure Switch
- Important Recalls for 2011-2012 M37 Owners
- Choosing the Right Aftermarket Switch
- Tier 1: OEM-Equivalent Quality
- Tier 2: Reputable Aftermarket Brands
- Tier 3: Value-Oriented
- Frequently Asked Questions (FAQ)
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