S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

What are these modules behind the front bumper?

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Old May 13, 2024 | 02:49 PM
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From: Suburban Washington DC
1995 S280 5-speed
What are these modules behind the front bumper?

2007 S550. Two in the front and two at the sides,





Parking sensors?

Last edited by atikovi; May 13, 2024 at 02:51 PM.
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Old May 13, 2024 | 03:08 PM
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S500
early cars that don't have visible round ultrasonic sensors - but do have parking sensors that beep - used radars - if you have the main radar with the shiny bit in the grill, it will certainly have two SGR radars for a wide field of view allowing slow speed start stop round town cruise control
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Old May 13, 2024 | 03:15 PM
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From: Suburban Washington DC
1995 S280 5-speed
Car has Distronic and I get the message in the dash that it's not working and throwing a 6055 code. Would these be a cause of that? Last owner installed a facelift bumper and the center modules are just zip tied in place. I guess not as they would throw a code of their own.
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Old May 13, 2024 | 03:29 PM
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2006 W221 S500L M273
Originally Posted by atikovi
Would these be a cause of that? Last owner installed a facelift bumper and the center modules are just zip tied in place.
Yes this would be the cause of that.
Last owner messed it up for you.
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Old May 13, 2024 | 04:40 PM
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S500
Mercedes can't seem to use sensible naming

old world w220 and some early Japanese spec 221s had radar cruise control using one central radar, gives up in traffic = 219 ADAPTIVE CRUISE CONTROL (DISTRONIC)
later high end w221's with start stop to 120 mph radar cruise = 233 AUTONOMOUS INT. CRUISE CONT. PLUS (DISTRONIC PLUS)
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Old May 13, 2024 | 06:35 PM
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From: Brooklyn, NY
2007 S550 4Matic 2013 S550 Base
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Old May 13, 2024 | 09:01 PM
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2013 S550 4MATIC
Originally Posted by atikovi
Car has Distronic and I get the message in the dash that it's not working and throwing a 6055 code. Would these be a cause of that? Last owner installed a facelift bumper and the center modules are just zip tied in place. I guess not as they would throw a code of their own.
Yes those are your distronic radars. Maybe something is wrong with those or maybe some is wrong with the one on the grill. Diagnosing should be done to determine...
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Old May 13, 2024 | 09:26 PM
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From: Suburban Washington DC
1995 S280 5-speed
Originally Posted by doni01
Yes those are your distronic radars. Maybe something is wrong with those or maybe some is wrong with the one on the grill. Diagnosing should be done to determine...
The only code I get doesn't mention an issue with those sensors,



And nothing on the Distronic diagram shows those bumper sensors,


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Old May 14, 2024 | 03:38 AM
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S500
SGR is the small radars

the big central one is the DTR

that's not the full modules - looks like N62/1 (number 31) is in the right rear wing of the boot - even my drawing is missing the SGR's in both bumpers








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