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I have a 2014 E350 4matic and my blind spot is inoperative.
The dealership wants $2300 to replace the corroded sensor.
Looking online I've found them for about $500.
I have a few questions:
How hard is it to replace myself?
Do I have to remove the bumper to access it or can I get to it from underneath the car?
Is the blind spot sensor only on the rear right bumper or also on the left?
After decoding my VIN I believe I have the sport package (please correct me if im wrong)
427 AMG SPEEDSHIFT MCT 7-Speed Sport Transmission
Hopefully it will turn out to be plug and play for you. Instructions call for commissioning or coding once new ones are installed.
Yeah I just noticed that looking over the instructions konig provided me. Hopefully it is just plug and play. If not maybe the dealership will help me out a bit.
Do you think I would still need coding even though my car was already programmed for blind spot sensors?
Doesn’t matter. Sometimes when you install a new Mercedes electronic component the car needs to recognize it for it to function. It may still be plug and play, but the instructions appear to indicate otherwise.
If you will find exactly the same sensor then no,
recently i had to replace one of the sensors on my 2014 and after i found one that was exactly the same as my old sensor, it worked right away as it should. Before that, i tried a few sensors where some of the numbers were different and they didn't work...
This is the numbers i was paying attention to :
If you will find exactly the same sensor then no,
recently i had to replace one of the sensors on my 2014 and after i found one that was exactly the same as my old sensor, it worked right away as it should. Before that, i tried a few sensors where some of the numbers were different and they didn't work...
My experience as well. I found a used unit out of California with the exact same numbers and it plugged up and worked. My case I also needed a new rear bumper harness though as one of the connector pins corroded and broke off on the side I was replacing (passenger side). I also pried cover off the radar/sonar units and looked like the corrosion didn't extend in to the unit on the driver side so I just replaced the passenger side. To help prevent future problems, I went ahead and resealed both unit covers with clear silicone and used dielectric grease on the connectors. Hopefully I wont have to worry about it again.
Last edited by hurddawg; Feb 3, 2020 at 01:08 AM.
Reason: grammar
I also found signs of corrosion inside the connectors and forgot to mention that I sealed connectors on each module with Loctite Clear Silicone Waterproof Sealant.
I used the whole tube on them hoping i will never have to replace a blind spot sensor again.
Looking at the existing connecter, the wires entering are molded-in.... not your typical rear-entry with a silicon seal. That may be why is not available and if it was, it'd need to include a pigtail.
If just the connector could be replaced (radar sensor as well) that be good. Given the corrosion and age, there's risk disconnecting the other working sensors and causing more damage.
I did some preliminary searching in WIS on the diagrams and EPC for PN of harness (212-540-59-10 blindspot + parking). I can't find the harness connectors (radar unit) separate, can you confirm?
I should say MB does not identify connectors in EPC. 10 character part # may be stamped on connector, find cost effective sacrifical harness, Google “Mercedes connector” that may produce matching image or replace harness and environmentally protect the connectors/sensors. I.e: not cost effective but they're available https://connectorexperts.com/i-25537...nsor-rear.html
Last edited by konigstiger; Jan 5, 2021 at 05:57 PM.
I have a 2014 E350 4matic and my blind spot is inoperative.
The dealership wants $2300 to replace the corroded sensor.
Looking online I've found them for about $500.
I have a few questions:
How hard is it to replace myself?
Do I have to remove the bumper to access it or can I get to it from underneath the car?
Is the blind spot sensor only on the rear right bumper or also on the left?
After decoding my VIN I believe I have the sport package (please correct me if im wrong)
427 AMG SPEEDSHIFT MCT 7-Speed Sport Transmission
I received a new harness and used radar sensor off eBay. The used radar sensor, for the most part, had all the same part numbers and HW/SW versions (date codes). The difference was the "Q" version, DC (I think manufacture date code) and S/N.
I won't have a chance to drive the car for a while, as its currently apart. However running tests in Xentry, the system appears to be functioning without any special procedures. The left sensor is the used one, and I happened to catch a screenshot with a fault on the right side. The car is inside my garage and the readings are very sensitive to walking around the car and any metallic objects.
These blind spot sensors reside under N62/1 Radar Sensors Control Unit (SGR), which for my E550 w/ distronic includes the front 3 radar sensors. There are Xentry procedures to perform: initial startup of control unit, updating control unit software and coding, and "teach-in" processes. I'm not sure, if any of them are "required" for these blind spot radar sensors, new or used.
The initial startup of control unit and control unit update, I suspect would certainly apply to the module/s (e.g. N62/1 SGR). The "teach-in processes" are only applicable the front radar sensors and appear to require a "initial startup" which I can only assume includes some form of calibration/testing as offset values are recorded for each sensor.
I have a 2014 E350 4matic and my blind spot is inoperative.
The dealership wants $2300 to replace the corroded sensor.
Looking online I've found them for about $500.
I have a few questions:
How hard is it to replace myself?
Do I have to remove the bumper to access it or can I get to it from underneath the car?
Is the blind spot sensor only on the rear right bumper or also on the left?
After decoding my VIN I believe I have the sport package (please correct me if im wrong)
427 AMG SPEEDSHIFT MCT 7-Speed Sport Transmission
I have a 2014 E350 4matic and my blind spot is inoperative.
The dealership wants $2300 to replace the corroded sensor.
Looking online I've found them for about $500.
I have a few questions:
How hard is it to replace myself?
Do I have to remove the bumper to access it or can I get to it from underneath the car?
Is the blind spot sensor only on the rear right bumper or also on the left?
After decoding my VIN I believe I have the sport package (please correct me if im wrong)
427 AMG SPEEDSHIFT MCT 7-Speed Sport Transmission
Hey! my w212 has a smiliar issue, everything is corroded to the core. Since the wiring harness ive searched for as well includes parking sensors (which I do not have), what should I do with the parking sensors if I buy the harness? Am I able to cut them off and tape em up? Thanks in advance
Hey! my w212 has a smiliar issue, everything is corroded to the core.
Since the wiring harness ive searched for as well includes parking sensors (which I do not have), what should I do with the parking sensors if I buy the harness?
Am I able to cut them off and tape em up?
Thanks in advance
Yes! I think you go the idea... don't let any water in near electronics.
Perhaps you can just get the matching BSpot connector or pig-tails without harness, then splice that in the car.
At any rate everyone with these units should weatherize the connectors before it's too late.
Last edited by CaliBenzDriver; Mar 30, 2022 at 12:46 PM.
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