'11 E350 4matic Wagon, new to me, issues needing attention




The rear differential gear set produces steel sludge that waste the pinion bearing because there's zero filtration.
Fresh oil + magnet = trouble free!👍




I do not know your axle drain plug thread size, but check this out :
https://drainplugmagnets.com/cars/mercedes-benz/
If you can get in USA, coin shaped Neo Magnet EH grade, that is 200 Celcius grade ( 392 F ) , probably just buy that magnet and use some sort of glue to stick to existing plug.
https://www.first4magnets.com/tech-c...um-magnets-i92
The regular Neo magnet I tried placing on engine bay, which is only 85 C at ABS brake pipes and it got weakened as standard one is 80 C only.




I do not know your axle drain plug thread size, but check this out :
https://drainplugmagnets.com/cars/mercedes-benz/
If you can get in USA, coin shaped Neo Magnet EH grade, that is 200 Celcius grade ( 392 F ) , probably just buy that magnet and use some sort of glue to stick to existing plug.
https://www.first4magnets.com/tech-c...um-magnets-i92
The regular Neo magnet I tried placing on engine bay, which is only 85 C at ABS brake pipes and it got weakened as standard one is 80 C only.
worthy differential saver
Last edited by CaliBenzDriver; Jul 8, 2021 at 01:54 PM.




As to not hijack BMW thread, I am moving the MAGNET discussion to here : https://mbworld.org/forums/e-class-w...ml#post8371672




I read on the W212 wiring schematic, there is an option to hook up for "towing" . I forgot what response is added into the CAN bus with such option, but it was not as simple as say extra brake light.
Will that be anyway useful in your towing scenario ?
Typically we use a trailer wiring converter, which can work with traditional 12V switched lights and/or PWM. I don’t believe the lights (taillights) are CAN
The taillight turn signals appear to be simple switched 12V. The marker and brake lights (same leds), are PWM. The marker lights are lower brightness and when braking they go full bright.
The factory module would be nice because it adjusts transmission shifting, adapts lighting output and I believe it’ll notify if one of the trailer lights are out.
The Best of Mercedes & AMG

Before I left I flushed the brakes and replace the rear diff fluid. I wanted to do the front diff, but was running out of time and didn't want to get stuck unable to refill it thru the drain plug.
Old fluid was in very good shape, ~118k on it and replaced with Liqui Moly 75W-90.


Since we are using a "basic" lighting convertor, I just need a circuit capable of 20A... I chose Fuse 89 as it was rated for 30A and I can tap into it with a MB-specific fuse holder (need to order).
I used a 10mm plastic body nut to secure the convertor a mounting stud (to right of SAM on floor). For ground, I picked up the an unused grounding point on the inner fender.


