daytime running lights not working

saala · 11-14-2008, 10:03 PM

i have an 09 cls550.i am trying to activate the daytime running lights.in the manual it says to keep the headlamp in the constant mode.but the lights dont seem to work.in the constant mode the headlamp turn on but not the DRL.is it something i have to take it to dealership and have it programmed ?

konigstiger · 11-15-2008, 10:17 AM

Headlamp switch to Auto
MFD: Settings – lighting – headlamp mode – to constant (DRL)

Kirkdob · 11-15-2008, 01:27 PM

I'm not sure if the setting is the same as my 06, but they did not work when I got my car also. Check your owners manual. There was a setting in lighting options that allows them to operate. It was easy and I changed the setting myself using the steering wheel controls.

saala · 11-25-2008, 04:51 PM

i did change the setting to the constant mode(drl) but i dont see the lights coming on.the same xenon bulb stays on.

saala · 11-25-2008, 04:52 PM

Quote:

Originally Posted by konigstiger

Headlamp switch to Auto
MFD: Settings – lighting – headlamp mode – to constant (DRL)

i did try that setting but the same low beam xenon lights come on in that setting.

konigstiger · 11-25-2008, 05:31 PM

Quote:

Originally Posted by saala

i did try that setting but the same low beam xenon lights come on in that setting.

#2 should be activated - DRL designed to operate at about half their normal power during daylight hours conserving energy and improving bulb life.

Kar don · 11-26-2008, 01:51 PM

yeah if you have xenon the low beam xenon is your DRL. CLS I had in canada the low beam xenon was on all the time. If you have halogens then the high beam operates at low power as your DRL.

konigstiger, you should know that! Come on!

saala · 11-26-2008, 08:49 PM

thanks guys now i got it.the reason i was confused was because my previous car 06 bmw 330i had xenon lights.but when i activate the DRL it was halogen bulb next to xenon which served as a DRL. but i guess MB uses same xenon at less intensity rather than the halogen bulb next to the xenon.

konigstiger · 11-27-2008, 12:26 PM

Quote:

Originally Posted by Kar don

konigstiger, you should know that! Come on!

A moment of clarity “bi-xenon”

Kar don · 11-27-2008, 12:46 PM

saala, actually the xenon runs at full intensity. You can't run them at partial power.

11-14-2008, 10:03 PM	#1
saala Almost a Member! Join Date: Feb 2008 Posts: 51	daytime running lights not working i have an 09 cls550.i am trying to activate the daytime running lights.in the manual it says to keep the headlamp in the constant mode.but the lights dont seem to work.in the constant mode the headlamp turn on but not the DRL.is it something i have to take it to dealership and have it programmed ?

11-26-2008, 01:51 PM	#7
Kar don Super Moderator Join Date: Nov 2001 Location: GMT -5 hours Posts: 5,121	yeah if you have xenon the low beam xenon is your DRL. CLS I had in canada the low beam xenon was on all the time. If you have halogens then the high beam operates at low power as your DRL. konigstiger, you should know that! Come on! __________________ 08 Mercedes-Benz CLS550 Iridium Silver/Black Leather - P2, AMG pkg, Parktronic, Ipod 07 Lexus GS350 Smoky Granite Mica/Ash leather - NAV, 18's, Sirius, AFS, ventilated seats, & Rear spoiler (gone!)

11-27-2008, 12:46 PM	#10
Kar don Super Moderator Join Date: Nov 2001 Location: GMT -5 hours Posts: 5,121	saala, actually the xenon runs at full intensity. You can't run them at partial power. __________________ 08 Mercedes-Benz CLS550 Iridium Silver/Black Leather - P2, AMG pkg, Parktronic, Ipod 07 Lexus GS350 Smoky Granite Mica/Ash leather - NAV, 18's, Sirius, AFS, ventilated seats, & Rear spoiler (gone!)

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11-15-2008, 10:17 AM	#2
konigstiger MBWorld Fanatic! Join Date: Jul 2003 Location: North Scottsdale, AZ Posts: 3,352	Headlamp switch to Auto MFD: Settings – lighting – headlamp mode – to constant (DRL) __________________

11-15-2008, 01:27 PM	#3
Kirkdob Newbie Join Date: Oct 2008 Location: SF Bay Area, CA Posts: 5	I'm not sure if the setting is the same as my 06, but they did not work when I got my car also. Check your owners manual. There was a setting in lighting options that allows them to operate. It was easy and I changed the setting myself using the steering wheel controls.

11-25-2008, 04:51 PM	#4
saala Almost a Member! Join Date: Feb 2008 Posts: 51	i did change the setting to the constant mode(drl) but i dont see the lights coming on.the same xenon bulb stays on.

11-26-2008, 08:49 PM	#8
saala Almost a Member! Join Date: Feb 2008 Posts: 51	thanks guys now i got it.the reason i was confused was because my previous car 06 bmw 330i had xenon lights.but when i activate the DRL it was halogen bulb next to xenon which served as a DRL. but i guess MB uses same xenon at less intensity rather than the halogen bulb next to the xenon.