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#1
12-08-2006, 05:04 AM
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BAS Malfunction
I had a malfunction message on my W203 today that says ' BAS Visit Workshop ' while driving. However, there did not seem to be any difference in the car's performance and braking. After switching the car off and re-starting ( the Microsoft way! ), the malfunction turned off and did not reappear after driving.
As my next workshop service visit is not due for some months yet, is this something that I should worry about, or leave it till the next service? 
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#2
12-08-2006, 08:13 AM
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BAS is part of the traction system ESP.. allows full ABS action by quickly applying the brakes.
You should have the system scanned for codes.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
12-08-2006, 10:04 AM
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probably a brake light switch going out.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#4
12-09-2006, 07:23 AM
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Agreed. Scanning tells all, but from my experience, the brake light switch will set off as many as three codes.
The switch was replaced on my W163 and W208 for the same issues. Both vehicles set off a BAS-type warning in different manners.
__________________
2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car
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#5
12-09-2006, 07:43 AM
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Don't just shotgun the stop lamp switch in the case of 203 models. they dont go bad as often as ML's and 210's/208's, they're few and far between. its more likely to be the diaphragm travel sensor, one of the pressure sensors, steering angle sensor, high resistance in the wires at the esp module etc, point being, just have it scanned.
__________________
 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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Linear Mode
