Dashboard Dims when I turn lights on ?

[Prestwick9]

Hopefully this should be easily identified, have a 320 clk 200 , when i switch my lights on the dashboard dims to the point where it is difficult to read. Dont think its a fuse,anyone had similar ? it may be under use of the car as i only use it at weekends, obly replaced battery 2500miles ago ? Hints and thoughts appreciated.

 

[jberks]

have you turned up the dimmer?

 

[dano]

I have exactly the same fault. As far as i know there is no dimmer for the dash lighting

Fault started after i had the number plate light replaced. Perhaps this is connected with the fault?

Hope the op and I get the answer

 

[Ellsy Tanners]

They all have dimmers, either turn the round plunger button or the +/- buttons on the cluster its self.

 

[television]

Yes all have dimmers

 

[Prestwick9]

No reference to lights from +/- function. Plunger button is what exactly ?

 

[jberks]

On the left hand edge of your cluster there is a single black knob, used to zero the trip meter amongst other things. Lesser known but it also turns and acts as a dashboard dimmer. Clockwise should turn it up.

 

[dano]

Thanks guys! On my 2002 CLK 320 the dimmer control is right next to the reset button used to zero the trip meter. There is an up arrow and a down arrow.

Ever since I bought this car I've been a bit annoyed about the dim display - and now its fixed

As a side note I got my spark plugs changed earlier this week. It transpires I've had a minor misfire ever since I bought the car almost a year ago. I thought this was normal (because that is the way it has always driven). A mechanic suggested I changed the plugs.

I was dubious right up to the point I drove the car. What a difference... so much more responsive

MPG for motorway travel has risen from 27mpg to 31mpg

If your service history shows no evidence of a plug change for more than 40,000 miles I suggest you get this done