Preventive Maintenance
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Joined: Oct 2010
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Well,
It is 14 years old so I think it can go just like the camshaft sensors.
The sensor is a Hall sensor meaning it has a magnet in it and magnets go weaker over time. If magnet goes too weak the sensor stops working, right?.
It is 14 years old so I think it can go just like the camshaft sensors.
The sensor is a Hall sensor meaning it has a magnet in it and magnets go weaker over time. If magnet goes too weak the sensor stops working, right?.
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MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,142
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
No huge improvement on how the car runs but it does start faster and perhaps is a bit “peppier”, but this could be just anticipated wish, but it does start taster.
Last edited by Arrie; Feb 28, 2026 at 11:47 PM.
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I'm a big fan of the MB Maintenance program, it's super convenient and helps me stay on top of my 2022 S580's schedule. I've also found that using the correct type of fuel (UL93, in my case) helps keep my engine happy and running smoothly.
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From: Phoenix
222 S-65
Hall sensor works differently from pulse generator. Pulse generator uses wire wrapped around a magnet or armature such that as the trigger passes it DC voltage is created. Two wires to the sensor. Analog sine wave signal. Hall Effect sensor uses a sensor that detects the trigger passing and allows voltage supplied by the control unit to pass. Makes a digital signal. In practice they both fail; always at the most inopportune moment. Often intermittently. There is good reason I kept a crank position sensor and tools to replace it in the glove box of the E-55.
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MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,142
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
The newer cars have that CANFD change, I think, that requires some kind of on-line activation for scan tools. I am sure there are some youtube videos about it. It caught my attention when I watched a video about scanners. It seems that LAUNCH is one of the brands that comply.
If you are a DIYer, that’s something to keep in mind when buying a recent model used car and especially a new car.
If you are a DIYer, that’s something to keep in mind when buying a recent model used car and especially a new car.
