Cigarette lighter power always on? 2003 C240
Thread Starter
Newbie
Joined: Aug 2011
Posts: 10
Likes: 0
2003 C240
Cigarette lighter power always on? 2003 C240
Hi all, long time forum viewer, first time poster. I am wondering if anyone knows how to make the cigarette lighter power stay on even when the car is turned off in a 2003 C240. I have seen some forum posts regarding this in the E-class, but I am not sure if the idea is the same in my car. Can anyone point me to some documentation or have knowledge of this?
Thanks in advance
-oriz
Thanks in advance
-oriz
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
OK - Yours is different to mine. Mine is like an Audi. SA assembly
Then take constant power from the fuse box in the side of the dash.
Then take constant power from the fuse box in the side of the dash.
Last edited by Glyn M Ruck; Aug 25, 2011 at 10:29 PM.
Trending Topics
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
You have a choice - Take it from the fuse box. Rewire your cig lighter to a 20amp permanently on tap in the fuse box.
Stay away from taps that go to sleep with the CANBUS like the radio.
Stay away from taps that go to sleep with the CANBUS like the radio.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Newbie
Joined: Aug 2011
Posts: 10
Likes: 0
2003 C240
What's involved in rewiring it to the 20A fuse? Just a matter of moving a couple wires or is there soldering and stuff involved? I'm totally new to this and haven't taken a look at the fuse box yet.
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
As cars vary you need to take a meter & find a tap in the fusebox that has a wire going to it as fat as the one going to the cig lighter & make sure it does not go to sleep with the CANBUS. Then run a new wire from there to the cig lighter. This requires some careful stripping of the dash & console to feed a new wire.
If your car was prewired for a cell phone then the wiring will be there already at the side of the console. Only Benz can tell you from your VIN whether the car is prewired.
If your car was prewired for a cell phone then the wiring will be there already at the side of the console. Only Benz can tell you from your VIN whether the car is prewired.
