hbb6
New Member
My new C350 is a constant annoyance to me because I cannot control the headlights (bi-xenon). They come on as I back out of my garage in bright sunlight, they come on under the canopy of petrol stations, they come on too early in the evening.
There is no off position on the headlight switch. I cannot understand why Mercedes want to dictate to drivers. My handbook says "The automatic headlight feature is only an aid. The driver is responsible for the vehicles lighting at all times". I think this statement is at odds with the function provided.
Doing test drives in the summer I wasn't aware of the lack of off position.
I have tried to get the dealer to change the switch, can't. I have tried to get the dealer to change the coding to make the 9 o'clock park position an off one, can't or won't.
Nor is it possible to adjust the sensitivity of the light sensor. Apparently it used to be.
I have looked at the light sensor on the windscreen to see if I could add a switch that could disable/enable the sensor. This would keep my DRLs going till dusk when I would enable the sensor. The sensor is needed to enable the interior lighting so I don't want to permanently disable the auto light function. Difficult to do this as the bus wires are the only easy access.
I have had a look in the headlight switch to see if I could do anything there to make an off position. (Took me 4 attempts to get it back together and working). Springs leap out!
I control the lights now by moving the switch to the park position when starting up and driving. This keeps all the lights off. However when leaving the car parked I frequently forget to return the switch to the "A" position to turn the parking lights off. Annoying.
I would like to drive with the DRLs on, but unless I am in bright daylight I will get headlights coming on. So although I have them they aren't on most of the time when they should be.
The no off position switch is being fitted to other new models, be warned.
Does anybody know if the coding can be changed to make park an off, or if the sensor sensitivity can be adjusted? Would also need a friendly person with a "star" box?
There is no off position on the headlight switch. I cannot understand why Mercedes want to dictate to drivers. My handbook says "The automatic headlight feature is only an aid. The driver is responsible for the vehicles lighting at all times". I think this statement is at odds with the function provided.
Doing test drives in the summer I wasn't aware of the lack of off position.
I have tried to get the dealer to change the switch, can't. I have tried to get the dealer to change the coding to make the 9 o'clock park position an off one, can't or won't.
Nor is it possible to adjust the sensitivity of the light sensor. Apparently it used to be.
I have looked at the light sensor on the windscreen to see if I could add a switch that could disable/enable the sensor. This would keep my DRLs going till dusk when I would enable the sensor. The sensor is needed to enable the interior lighting so I don't want to permanently disable the auto light function. Difficult to do this as the bus wires are the only easy access.
I have had a look in the headlight switch to see if I could do anything there to make an off position. (Took me 4 attempts to get it back together and working). Springs leap out!
I control the lights now by moving the switch to the park position when starting up and driving. This keeps all the lights off. However when leaving the car parked I frequently forget to return the switch to the "A" position to turn the parking lights off. Annoying.
I would like to drive with the DRLs on, but unless I am in bright daylight I will get headlights coming on. So although I have them they aren't on most of the time when they should be.
The no off position switch is being fitted to other new models, be warned.
Does anybody know if the coding can be changed to make park an off, or if the sensor sensitivity can be adjusted? Would also need a friendly person with a "star" box?