R129 bulbs

[Hoolio]

I want to replace all the interior bulbs in my SL500. Is there a source where I can find out which and how many bulbs I need to buy?

[Deefor62]

All the bulb types are listed in the handbook, assuming you have one?

[Hereward]

I replaced all mine with Osram LED festoon bulbs. Just remove them one by one to check sizes. I can't remember if they were 41mm or 36mm or a mix of the two. I think the map spotlights are non-festoon.

"Warm White" gives a more pleasant yellowish light, compared to the clinical white light of "Cool White".

[Hoolio]

Deefor62 said:

All the bulb types are listed in the handbook, assuming you have one?

I'll have another look, couldn't find that last time I looked.

[Hoolio]

Hereward said:

I replaced all mine with Osram LED festoon bulbs. Just remove them one by one to check sizes. I can't remember if they were 41mm or 36mm or a mix of the two. I think the map spotlights are non-festoon.

"Warm White" gives a more pleasant yellowish light, compared to the clinical white light of "Cool White".

Thanks! Do the LED's give much more light? I want it to look OEM. Also I presume they worked fine e and didn't flag any errors etc?

[Hereward]

The Osram LED's emit more light and aren't too garish, but they cannot totally reproduce the warm yellow of OEM filament bulbs. No issues with fault codes.

I think all the new LED's together consume less power than one of the old filament bulbs. The original filament bulbs emit a huge amount of heat, LED's run cold.