C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Deactivating of 3RD Brake Lamp Warning

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Old Aug 20, 2016 | 01:32 PM
  #1  
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MB W203 C200 K 1998ccm 163HP Automatic Petrol 2000 model
Deactivating of 3RD Brake Lamp Warning

Aloha peeps

I've installed a strobe-relay for my 3rd brake light, and my old Daimler don't like it, so it comes up with a warning when I hit the brakes after start. Luckily I can hide the warning with the steering-wheel button and it don't show up after that when I hit the brakes.
I asked the MB Dealer, but they can't do it because of some safety issues....
sissies

Here is how it looks:

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Old Aug 21, 2016 | 09:14 AM
  #2  
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2005 C230K SS
Might be able to do it with STAR. I have the BMW equivalent of that for my e46 and I am able to tell the car to ignore bulb checks on any particular lamp completely. I have STAR too but I haven't had it on the car in a long time, and I've not fiddled with lighting options either...getting lazier as I get older lol
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Old Aug 22, 2016 | 01:09 AM
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MB W203 C200 K 1998ccm 163HP Automatic Petrol 2000 model
Yeah...I am looking around the internet for a C3 or C4, but they doesn't come cheap! And I just want to have it for me and my car. I'm not a workshop who is interested in doing stuff for others. Just like to check how things are going with my baby from time to time and of course make changes when I need it
I see there is another device called CarSoft 7.4 out there much cheaper...Have you tried it out?....or anybody else? Does it have the same functions as the STAR?
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Old Aug 22, 2016 | 01:06 PM
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2005 C230K SS
Yeah they are pricey but pays for itself...when I installed my comand HU the dealer charged me $125 to code it....and they failed. Said it couldn't be done. I bought my own and did it in 15 minutes. The few times I've used it for diagnostics have saved me from getting financially raped by the dealer.
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Old Aug 22, 2016 | 02:22 PM
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MB W203 C200 K 1998ccm 163HP Automatic Petrol 2000 model
I have a opportunity at hand...someone in my city is advertising a complete set with the Star SD C4 updated 2016 Laptop with SSD. Used just a few times and tested for $1240. Could try to make him a offer...How sounds $800 to start with?
I know I can get it cheaper from China, but have heard various things about the stuff they sell on aliexpress
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Old Aug 22, 2016 | 02:29 PM
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MB W203 C200 K 1998ccm 163HP Automatic Petrol 2000 model
One follow up question....Can I optimize the ecu, so it runs better or improve the consumption of petrol?
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Old Aug 22, 2016 | 04:42 PM
  #7  
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From: Carolinas
2005 C230K SS
Originally Posted by Explendidos
I have a opportunity at hand...someone in my city is advertising a complete set with the Star SD C4 updated 2016 Laptop with SSD. Used just a few times and tested for $1240. Could try to make him a offer...How sounds $800 to start with?
I know I can get it cheaper from China, but have heard various things about the stuff they sell on aliexpress
Waaaay too expensive...look on ebay or obdtool dot com or similar sites. I got both my mb and bmw units from xcar dot com, both work like a charm. I use a dedicated laptop that never goes online, otherwise the software will attempt to update and lock up.
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Old Aug 22, 2016 | 04:46 PM
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From: Carolinas
2005 C230K SS
Originally Posted by Explendidos
One follow up question....Can I optimize the ecu, so it runs better or improve the consumption of petrol?
I'd leave the ecu stuff to the pros, you could really mess up things. You do have quite a bit of other engine parameters to play with though...
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Old Aug 23, 2016 | 08:54 PM
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I have looked for any possible change in coding and could not find an option to turn it off, at least in the w203s. I was able to do it in my w166, but that doesn't help you. I think your best option is to put a resistor (50 ohm) in parallel with your relay so the rear SAM doesn't see a break in current. You might even be able to get away with a higher resistance since that circuit is only driving an LED and that way the resistor won't get as hot. Measure the current when the light is on and calculate the necessary resistance to match it.
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Old Aug 24, 2016 | 08:04 AM
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MB W203 C200 K 1998ccm 163HP Automatic Petrol 2000 model
Originally Posted by jrsmith_68
I have looked for any possible change in coding and could not find an option to turn it off, at least in the w203s. I was able to do it in my w166, but that doesn't help you. I think your best option is to put a resistor (50 ohm) in parallel with your relay so the rear SAM doesn't see a break in current. You might even be able to get away with a higher resistance since that circuit is only driving an LED and that way the resistor won't get as hot. Measure the current when the light is on and calculate the necessary resistance to match it.
Nice, thank you man! That will save me a lot of dollars!!
Will try it out, and come back with the results
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