G55 Rear dome light, can't get LED to work
Thread Starter
Junior Member
Joined: Dec 2011
Posts: 41
Likes: 0
Various
G55 Rear dome light, can't get LED to work
Hi, I've swapped out all of the interior bulbs to LED (CANBUS) in my 2009 G55, but for some reason can't get the dome light to work with an LED bulb above the rear seats. It appears to be the same bulb as the front dome light, but nothing I've tried works. The map lights are fine with LED.
Does anyone know the right LED bulb to use for this dome and where to buy it? Is there some trick I need to do (i.e. turning off the car and back on in some way...I think I tried this but it didn't work).
Thanks-
Rodger
Does anyone know the right LED bulb to use for this dome and where to buy it? Is there some trick I need to do (i.e. turning off the car and back on in some way...I think I tried this but it didn't work).
Thanks-
Rodger
Member
Joined: Sep 2008
Posts: 222
Likes: 5
'13 CLS550, '17 Q7, '11 G550
You need to add a resistor inline (between the power going into the unit and to one of the prongs on the festoon bulb). Just went thru the same ordeal on my 2011...now I got LED bulb all working in the interior. The reason why it needs the resistor (even being CANBUS error free) is that when you have a regular bulb in there you'll notice it gradually goes to full output (ie - dimmer) and most auto LED bulbs can't do that.
I bought all my bulb from these guys and they are the ones that pointed me the right way....
https://www.superbrightleds.com/more...g-fix/191/832/
I bought all my bulb from these guys and they are the ones that pointed me the right way....
https://www.superbrightleds.com/more...g-fix/191/832/
Thread Starter
Junior Member
Joined: Dec 2011
Posts: 41
Likes: 0
Various
Great, thanks. I'll contact those guys right away!
Did you by any chance change the exterior lights to LED as well? I'm having issues with the marker lights. The rear work, but the bulbs are not a good fit and shake loose quickly after driving. The front worked at first when I installed them, but for some reason I can't get the to work now. I just had MB make sure the wiring was ok (for corrosion). Do you think I need a resistor there as well?
Did you by any chance change the exterior lights to LED as well? I'm having issues with the marker lights. The rear work, but the bulbs are not a good fit and shake loose quickly after driving. The front worked at first when I installed them, but for some reason I can't get the to work now. I just had MB make sure the wiring was ok (for corrosion). Do you think I need a resistor there as well?
Member
Joined: Sep 2008
Posts: 222
Likes: 5
'13 CLS550, '17 Q7, '11 G550
I've swapped out all the exterior bulbs as well...Top signal units, side markers, and rear lights. For the side markers I didn't have to add any resistors. Only had to add them for the rear signal.
I used these bulbs (got clear lenses and then go the right color bulb) and they seem to fit pretty well. You may try to just bend in the metal prong that touches the bottom of the bulb, that will make the bulb sit in tighter.
https://www.superbrightleds.com/more...ofit-car/2077/
I used these bulbs (got clear lenses and then go the right color bulb) and they seem to fit pretty well. You may try to just bend in the metal prong that touches the bottom of the bulb, that will make the bulb sit in tighter.
https://www.superbrightleds.com/more...ofit-car/2077/
Trending Topics
Junior Member
Joined: Jun 2009
Posts: 16
Likes: 1
From: North Carolina, USA
2010 G55 AMG
Which Resistor for dome light?
You need to add a resistor inline (between the power going into the unit and to one of the prongs on the festoon bulb). Just went thru the same ordeal on my 2011...now I got LED bulb all working in the interior. The reason why it needs the resistor (even being CANBUS error free) is that when you have a regular bulb in there you'll notice it gradually goes to full output (ie - dimmer) and most auto LED bulbs can't do that.
I bought all my bulb from these guys and they are the ones that pointed me the right way....
https://www.superbrightleds.com/more...g-fix/191/832/
I bought all my bulb from these guys and they are the ones that pointed me the right way....
https://www.superbrightleds.com/more...g-fix/191/832/
Which resistor inline did you use for the dome light?
Thanks.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Junior Member
Joined: Dec 2011
Posts: 41
Likes: 0
Various
I actually didn't end up needing a resistor. The bulbs I bought from superbrightleds.com worked fine just plugging them in...dimming and everything. Not sure how, but they work. I recommend that site, all of their bulbs have worked great. Just make sure you buy the CANBUS option.
Junior Member
Joined: Jun 2009
Posts: 16
Likes: 1
From: North Carolina, USA
2010 G55 AMG
SBI site
I actually didn't end up needing a resistor. The bulbs I bought from superbrightleds.com worked fine just plugging them in...dimming and everything. Not sure how, but they work. I recommend that site, all of their bulbs have worked great. Just make sure you buy the CANBUS option.
When I tried the CAN BUS for my '10, they worked wll except for the dome light over the rear seats. It comes on quickly with open door but then goes out, It will not work in conjunction with the rear interior light switch in the front.
Scratching my head on why the same bulb works in the from dome light but not in the rear light dome light.
Thread Starter
Junior Member
Joined: Dec 2011
Posts: 41
Likes: 0
Various
I had that same exact problem...everything worked but the rear dome, but then I got a new bulb from SBLeds and it works perfect...no resistor.
I'd give their bulb a try and see if it works for you too. I have an 09 G55, so it's most likely the exact same thing inside.
I'd give their bulb a try and see if it works for you too. I have an 09 G55, so it's most likely the exact same thing inside.
Super Member
Joined: Sep 2006
Posts: 666
Likes: 61
From: Hermosa Beach, CA
21 G63, 21 GLS580, 16 GTS Ed. 1
How did you remove the center bulb from rear passenger dome? I'm stuck thanks
Figured it out. Just needed to work wheres there's better lighting to see what I'm doing
Figured it out. Just needed to work wheres there's better lighting to see what I'm doing
Last edited by Venom-AMG; Jan 31, 2018 at 02:35 AM.
Junior Member
Joined: Jun 2009
Posts: 16
Likes: 1
From: North Carolina, USA
2010 G55 AMG
You need to use a small flat screwdriver and gently pop out the entire light assy. Use the screwdriver at the end of each side and gently pry it the whole light out.
It will hang down by the wire. You need to then pry the light assy apart to get to the bulb in the middle.
It will hang down by the wire. You need to then pry the light assy apart to get to the bulb in the middle.
Super Member
Joined: Sep 2006
Posts: 666
Likes: 61
From: Hermosa Beach, CA
21 G63, 21 GLS580, 16 GTS Ed. 1
Thread Starter
Junior Member
Joined: Dec 2011
Posts: 41
Likes: 0
Various
Those are called "Courtesy Lights", you need a mini-wedge CANBUS bulb for those, replaced them on my 2 G-wagons no problem, just need to pry out the casing with a screwdriver. Here's a link for what I used:
https://www.superbrightleds.com/more...ofit-car/1127/
https://www.superbrightleds.com/more...ofit-car/1127/
