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

REVERSE LIGHT BULBS

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Old Mar 24, 2026 | 01:10 AM
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REVERSE LIGHT BULBS

Hello everyone, did anyone replace back up light bulbs to ELD bulbs? Bought eld bulbs from ebay and replaced them, they looked amazing but got error codes and they are blinking, any advise? Is it possible to get rid off ugly yellow halogen bulbs to ELD? My car is a 2010 s550 sedan, please help. Thank you in advance
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Old Mar 24, 2026 | 05:06 AM
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2006 W221 S500L M273
Huh? How did you do that? Did you put a LED bulb into one of these sockets? Which bulb did you get?

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Old Mar 24, 2026 | 06:12 AM
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W221 S500
Originally Posted by dakare46
Hello everyone, did anyone replace back up light bulbs to ELD bulbs? Bought eld bulbs from ebay and replaced them, they looked amazing but got error codes and they are blinking, any advise? Is it possible to get rid off ugly yellow halogen bulbs to ELD? My car is a 2010 s550 sedan, please help. Thank you in advance
Is that your surprised face?🤦

Buy decent LED bulbs as a starting point. They also need to be Canbus compatible. Cheap Chinesium shyte off eBay/Amazon will never work properly.

Better yet, fit good quality incandescent bulbs like it was designed for.
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Old Mar 24, 2026 | 08:02 AM
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W221.156 S350
Originally Posted by AL5461
Better yet, fit good quality incandescent bulbs like it was designed for.
I second this ^^^
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Old Mar 24, 2026 | 09:54 AM
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I bought these bulbs, they fit fine but they blink and I get codes

https://www.ebay.com/itm/38564396124...G96RATHH378K0Y
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Old Mar 24, 2026 | 09:55 AM
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Is eld conversion possible?
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Old Mar 24, 2026 | 11:09 AM
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W221 S500
Originally Posted by dakare46
I bought these bulbs, they fit fine but they blink and I get codes

https://www.ebay.com/itm/38564396124...G96RATHH378K0Y
As I suspected cheap Chinesium shyte. From a hooky seller claiming to be in Kentucky. Don't believe me? Try sending them back...

And you wonder why they flash and have codes for bulb failures🤦

Just because they fit doesn't mean they'll work, or that you should fit them.

Assuming you have legs, these will technically fit into fishnet crotchless stockings... Doesn't mean you should.😉
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Old Mar 24, 2026 | 11:09 AM
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2006 W221 S500L M273
Are you sure you have a w221?
Did you actually fit that T15 LED bulb into the rear light base?
And by "eld" you mean "LED"?
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Old Mar 24, 2026 | 11:18 AM
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S500
brighter reversing lights isn't totally stupid - any other rear bulbs likely very silly unless trying to get better rear camera view with the old clunky metal camera and trying other silly number plate lights - but fitting them is a right pain so never tried

Merc has a wonderful bulb error handling system compared to the utter garbage BMW pedal - so you should be able to get good ones that behave

budget junk and fun with bulb errors is par for the course with LEDs - on a BMW the only real fix is to pull the same current as the original bulbs - by adding a resistor.
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Old Mar 24, 2026 | 11:52 AM
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W221 S500
Originally Posted by BOTUS
brighter reversing lights isn't totally stupid - any other rear bulbs likely very silly unless trying to get better rear camera view with the old clunky metal camera and trying other silly number plate lights - but fitting them is a right pain so never tried

Merc has a wonderful bulb error handling system compared to the utter garbage BMW pedal - so you should be able to get good ones that behave

budget junk and fun with bulb errors is par for the course with LEDs - on a BMW the only real fix is to pull the same current as the original bulbs - by adding a resistor.
Just fitting new, quality incandescent bulbs would be an improvement tbh.
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Old Mar 24, 2026 | 05:08 PM
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what is that?
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Old Mar 24, 2026 | 05:37 PM
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W221 S500
Originally Posted by dakare46
what is that?
The equivalent bulbs to those that it left the factory with as set out in the handbook.

Ideally a quality brand from a reputable source... Osram, (my go to), or similar.
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Old Mar 24, 2026 | 09:36 PM
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So there is no way to have beautifull hyper white bulbs in our cars, so it looks like new cars, as example my w222 and w223 cars that i own, even my g63 has amazing bright white back up bulbs. I thought maybe some of you guys did that mod
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Old Mar 25, 2026 | 04:30 AM
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there is some coding changes for the facelift lights as they get LED - the bulbs do not come out of my non facelift 221 rear units - they appear to be soldered in place - and the parts document back me up

of course it should cope with quality LED conventional fitment lights - but as eluded too there are lots of different quality LED bulbs out there

LEDs flicker they have hardware to remove it (drivers) they often fail - canbus malarkey is more weird and I have no idea if it marketing or has some validity - they are covered in chips and the new stuff is no longer polarity sensitive (fit either way around)

it doesn't help BMWs cope - but my low watt LED front side lights work perfectly in my W221 they don't misbehave and they have never thrown anything on the dash cluster, nor show faults in diagnostics - the very same bulbs totally misbehave in a BMW - they are 5W5 aka T10 https://auxito.com/collections/car-i...-led-lights/2e

novsight / nighteye make some of the best LEDs I'm aware off

Last edited by BOTUS; Mar 25, 2026 at 04:31 AM.
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Old Mar 25, 2026 | 05:39 PM
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For the reverse bulbs, you should just need to replace the entire bulb unit, they're pretty cheap and the process is pretty straightforward, no need for any fancy adapters or anything. Just grab an H11 bulb, make sure it's from a reputable brand, and swap it out with the old one.
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Old Mar 26, 2026 | 05:15 AM
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2006 W221 S500L M273
Originally Posted by dakare46
I bought these bulbs, they fit fine but they blink and I get codes
https://www.ebay.com/itm/385643961243
Originally Posted by AlexMonroe75
For the reverse bulbs, you should just need to replace the entire bulb unit, they're pretty cheap and the process is pretty straightforward, no need for any fancy adapters or anything. Just grab an H11 bulb, make sure it's from a reputable brand, and swap it out with the old one.
I'm so confused by these posts. Are we still talking about the reverse lights?
You cannot change the bulbs in these right?

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Old Mar 26, 2026 | 05:56 AM
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I believe you could hack or grind out the original bulbs - but they are fixed in place as I mentioned in post #14
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Old Mar 26, 2026 | 10:17 PM
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From: MA Coast
W204 2010 C300 4matic Sport M272
I dont have a 221 so cant check. I looked up the 2008 S-Class operators manual to see what they say about bulb replacement. Looks like the reverse is a "HiP 16w". I never heard of it before. Found some bulbs on ebay that seem to match the bulb carrier posted above.


Im assuming 13 is the backup lamp.







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Old Mar 27, 2026 | 12:59 PM
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From: MA Coast
W204 2010 C300 4matic Sport M272
Would be nice to see a photo of the bulb carrier that is in that car.

I looked up the 2010 S550 Operators manual and it mentions the HiP bulbs. Then I looked thru the 221.171 parts diagrams and it shows two different bulb carriers that can be installed. One of the carriers does list a W16W / 921 bulb.

My knowledge with electronics is limited especially with understanding can-bus. Easy thing to do is just search on Amazon for 921 led bulbs and check out the specs of the bulbs, see how many watts each bulb is rated for. Other than finding replacement bulbs with the same watts I wouldnt know what would work or not as far as getting bulb warnings.
















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Old Mar 27, 2026 | 02:04 PM
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W221 S500
Looking at the actual bulb, the part that is clipped to the cluster is actually a bulb holder.

If you want to really upset the car, as per the OPs first post, buy the cheapest, crappiest.Chinesium tat LED from Amazon or, better yet, TEMU, jam it in an wonder why it doesn't work properly... 🤦
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Old Mar 27, 2026 | 02:54 PM
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W221 S500
Looking at the actual bulb... N000000 004145, the black holder should be reusable.

Forcing a traditional bayonet type bulb into the cluster is only going to end in tears.

And we already know how well the LED "upgrade" went.

Last edited by AL5461; Mar 27, 2026 at 02:56 PM.
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Old Mar 29, 2026 | 12:31 AM
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My car is a facelift, people say led bulbs will work as long as they have resistors buil in them
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Old Mar 29, 2026 | 12:32 AM
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https://sealight-led.com/product/sea...YaAjLcEALw_wcB


they say these will work, i have to try it, refund available
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Old Mar 29, 2026 | 06:32 AM
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2006 W221 S500L M273
Dude, did you not read any of the posts?
Or are you trolling?
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Old Mar 29, 2026 | 05:03 PM
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W221 S500
Originally Posted by Jaap
Dude, did you not read any of the posts?
Or are you trolling?
Apparently use of the words "tat", "Chinesium" and "cheap" in a sentence requires moderation...

On that basis I assume "eejit" would also qualify🤔

Nothing in the listing the OP has posted suggests that they're an improvement by any definition.

Last edited by AL5461; Mar 29, 2026 at 05:09 PM.
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