M-Class (W166) Produced 2012-2015

Replace front turn signal with LED bulbs?

Old Dec 16, 2018 | 10:03 PM
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
Replace front turn signal with LED bulbs?

Hey all,

I have a 2015 ML 350 with the halogen bulbs (ugh). Anyways, I would like to swap out the halogen turn bulbs for LED ones. The service manual makes it appear as if they aren't swappable (the marker lamps, running lamps, low and high beams are all given instructions for replacement, but not the turn signals). I've just ordered LED bulbs for the rear lights, but would like to complete the conversion to all-LED with the front lights. Any ideas?
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Old Dec 17, 2018 | 09:40 AM
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Make sure the bulbs you buy use as much current (amperage) as the old ones. Or, get load simulators, otherwise you'll get an error message. My reverse bulbs were advertised as error-free, but I get an error message every time I back up. Turns out the replacement LED's were about 20 watts and the OEM's are around 40
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Old Dec 18, 2018 | 12:37 PM
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2020 GLE350 2020 Toyota Rav4H AWD XLE
Originally Posted by peter2772000
Make sure the bulbs you buy use as much current (amperage) as the old ones. Or, get load simulators, otherwise you'll get an error message. My reverse bulbs were advertised as error-free, but I get an error message every time I back up. Turns out the replacement LED's were about 20 watts and the OEM's are around 40
basically agree with above
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Old Oct 15, 2020 | 11:13 AM
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Has anyone figured out how to get to the front turn signals?
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Old Oct 15, 2020 | 12:15 PM
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Originally Posted by imthatmvrk
Has anyone figured out how to get to the front turn signals?
basically if you wanna do this and your not a DIYer, you should get it professionally done with the correct bulbs so you dont get errors on the BC (board computer)
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