If you’re here, then it most likely means you have heard about your Mercedes’ oil pressure switch, and are wondering what it does, how it works, and how to know if it’s malfunctioning.
All these things are important to know because a failing oil pressure switch in your Mercedes can lead to significant engine damage if left unchecked. When the oil pressure switch malfunctions, you might experience erratic oil pressure readings, warning lights on your dashboard, or even engine performance issues. If you’re noticing any of these warning signs, it’s essential to have your Mercedes inspected as soon as possible.
At Das European Autohaus, we are specialists in the maintenance and repair of Mercedes-Benz and other European vehicles, and want you to have all the information on the repairs we perform. So let’s go into a bit more detail about the oil pressure switch and its function in your Mercedes.
Oil Pressure Switch 101
Let’s start with the basics, what is a car engine oil pressure switch?
The oil pressure switch – otherwise known as an oil pressure sensor – is an electronically programmed device that monitors the oil pressure in your engine. You can usually find it in the engine block or oil pump and works by sensing the pressure of the oil as it gets pumped through the engine. It then sends a signal that lets you know when the oil pressure is too low.
And what is so bad about oil pressure dropping?
Your Mercedes oil pressure, and any other car’s, has to stay at a certain level to make sure the engine and the other components are properly hydrated; if they’re not, it can cause serious engine damage or even complete engine failure.
The oil pressure switch also communicates with other components of your Mercedes such as the transmission or fuel injection system, so it is a really important component overall.
Signs Of Your Oil Pressure Switch Failure
Thankfully, your car has ways of letting you know something is wrong with the oil pressure switch, here are some of the most common:
- The low pressure warning light turns on in your dashboard, which lets you know if the pressure is too low.
- The gauge gives erratic and inaccurate readings, like showing high pressure when the engine is stable, or showing low pressure when the engine is running high.
- The engine makes unusual noises like knocking or grinding.
If the oil pressure switch stops working and stops detecting low oil, it can be fatal to your engine. At Das European Autohaus we perform specialized and accurate diagnostics to make sure your oil pressure switch is working properly.
Why Immediate Repairs Matter
A Mercedes engine is one of the most complex examples of auto engineering out there and requires certain conditions to run optimally. One of them is the right oil pressure. Ignoring oil pressure switch failure can cause excessive engine wear, overheating, and even complete engine failure. It’s important to address these issues before they become too severe.
FAQs
How much does oil pressure switch replacement cost?
The price of a new oil pressure switch can vary depending on the make and model. Be sure to talk to our technicians about costs and payment plans so we find the right fit for you.
Can a failing oil pressure switch cause an oil leak?
Yes, it can because incorrect pressure can alter connection points where the oil passes through.
What brands do you service at Das European Autohaus?
At Das European Autohaus, our two locations use the tools and equipment needed to perform oil changes and additional services for European brands including:
- Audi
- BMW
- Mercedes
- MINI
- Porsche
- Volkswagen
Where To Go In The Woodlands To Fix Mercedes Oil Pressure Switch Failure
At Das European Autohaus we specialize 
in oil switch repair and other Mercedes procedures. We have been servicing drivers in Spring and The Woodlands for years, making sure their vehicle works exactly as it should, maybe even better.
Call us today 281-235-5934 for our Spring location or at 832-390-1449 for our Woodlands location to schedule your car’s next oil change or any additional maintenance or services that your Mercedes might need.