BMW M3 Engine Oil Pressure Switch Guide (2015-2022)
An essential guide to diagnosing and replacing the engine oil pressure switch on your F80 or G80 M3.
- Do not drive your M3 if the oil pressure warning light is on; have it towed to avoid engine damage.
- A faulty oil pressure switch is a common, inexpensive fix for an oil pressure warning.
- When replacing, inspect the electrical connector for oil contamination, a common failure point.
- Choose a reputable aftermarket brand like Standard Ignition for this critical sensor.
Is Your M3's Oil Pressure Warning Light On?
An oil pressure warning on your BMW M3 is not something to ignore. It could mean you have a serious problem, like low oil level or a failing oil pump. However, it can also be caused by a faulty engine oil pressure switch, which is a much simpler and less expensive fix. This sensor can fail by giving false readings or by leaking oil into its own electrical connector, causing a bad connection. This article will help you understand the symptoms of a bad switch and how to choose the right aftermarket replacement for your 2015-2022 M3.
Warning: Do Not Drive with an Oil Pressure Light
If you see a low oil pressure warning, pull over and shut off the engine as soon as it is safe to do so. Driving without proper oil pressure can destroy your engine in minutes. While the problem could be just a bad sensor, you can't take that risk. It's best to have your vehicle towed.
Choosing an Aftermarket Oil Pressure Switch
When replacing the oil pressure switch, you have options outside of the dealership. For a vehicle like the M3, choosing a quality aftermarket part is important. The brands available are generally reliable, but it's good to know the difference.
- Standard Ignition (SMP): This is a well-known and respected brand in the auto parts industry. They manufacture their own components in certified facilities and are known for quality control. For a critical sensor like this, Standard Ignition is a dependable choice that meets or exceeds OEM specifications.
- Global Parts: This brand appears to be a larger distributor, and reviews can be mixed. While many customers report positive experiences with price and delivery, some have raised concerns about part quality in online forums. Given the critical function of this sensor, exercise caution and consider the brand's reputation.
Pro Tip: Check the Connector
A common failure on these BMW engines is the oil pressure switch leaking oil through its body and into the electrical connector. When you replace the switch, inspect the wiring harness connector carefully. If it is full of oil, clean it thoroughly with an electrical contact cleaner before installing the new part.
Cost of Replacing an M3 Engine Oil Pressure Switch
The cost to replace the oil pressure switch is relatively low, especially if you do it yourself. The main cost is the part itself, with labor being minimal for an experienced mechanic.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Part | $25 - $40 |
| New Aftermarket Part | $65 - $66 |
| Shop Labor | $100 - $180 |
Frequently Asked Questions
Where is the oil pressure switch located on a 2015-2022 M3?
On the S55 and S58 engines used in these M3s, the oil pressure switch is typically located on the oil filter housing assembly. You can usually access it from the top of the engine by removing the plastic engine cover.
Is this the same as the oil level sensor?
No. The oil pressure switch is different from the oil level sensor. The pressure switch triggers an immediate warning for low pressure. The oil level sensor is located at the bottom of the oil pan and is used for checking the oil level through the iDrive system, since these cars do not have a traditional dipstick. A failure of the level sensor will usually prevent the iDrive from completing an oil level measurement.
Are there any recalls for this part?
There are no specific recalls for the engine oil pressure switch on the 2015-2022 BMW M3. However, BMW has issued software updates related to how the car reports oil pressure faults, which may indicate they are aware of sensor or system sensitivities.
Can a bad oil change cause these symptoms?
Yes, potentially. On the S55 engine, there is a plastic cage in the oil filter cap that is critical for proper function. If a technician accidentally throws this out with the old filter, it can cause oil pressure errors and VANOS codes. If you experience issues immediately after an oil change, this is something to investigate.
Technical Specifications
OEM Part Numbers: 12618611273 12617620512 12617568480 12612367061
The oil pressure switch for the S55/S58 engine is typically located on the oil filter housing. It is a single-pin or multi-pin sensor that reads pressure and communicates with the DME.
We Have This Part in Stock
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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