W202 C240 indicators with a mind of their own

bigyorkshireman · 25-03-2009, 03:12 PM

Hi hoping you can help! I have a a 1999 C240 and have discoevered an intermittent fault with the indicators.

The indicators come on by themselves without using the indicator stalk. When the stalk is used to try to cancel the indicators, for example if left indicator is on, try to indicate Right and it stays on. Sometimes it flashes between the two, couple of flashes left, then couple of flashes right. Tried putting hazards on for a while – no use, tried wiggling the stalk – again, no use.

At the momment I have had to take the fuses out to drive the car (although this also knocks out the wiper!)

Does anybody have any ideas what could be causing this?

Smiley · 25-03-2009, 04:23 PM

I would take a look at the relay first; this played up on my w124 and it caused a number of faults. try taking the relay out and replacing; or even better try wiggling it around in its connection whilst the fault is happening; see if it makes a difference.
if it does fix it when you move it around then you will need a new relay.
If not then the stalk assy itself.

BlackC55 · 25-03-2009, 05:34 PM

It will be the combination switch (wiper stalk) that is your problem.

bigyorkshireman · 25-03-2009, 07:26 PM

Thanks for the advice guys - will try the relay first and then look at the stalk assembly.

Thanks again...

jaymanek · 25-03-2009, 07:41 PM

its the stalk... we have replaced a few.

bigyorkshireman · 26-03-2009, 09:36 PM

Thanks for the advice - any ideas what I am looking at cost wise for the indicator stalk replacing?

BlackC55 · 26-03-2009, 09:44 PM

About £75 I think. Plus fitting

recycled · 27-03-2009, 11:20 AM

does it light up your rear demister by any chance? The button in the middle of the blower dials on the centre console

25-03-2009, 03:12 PM	#1
bigyorkshireman New Member Join Date: Mar 2009 Location: Cheshire Car: Mercedes C240 Elegance Posts: 7	W202 C240 indicators with a mind of their own Hi hoping you can help! I have a a 1999 C240 and have discoevered an intermittent fault with the indicators. The indicators come on by themselves without using the indicator stalk. When the stalk is used to try to cancel the indicators, for example if left indicator is on, try to indicate Right and it stays on. Sometimes it flashes between the two, couple of flashes left, then couple of flashes right. Tried putting hazards on for a while – no use, tried wiggling the stalk – again, no use. At the momment I have had to take the fuses out to drive the car (although this also knocks out the wiper!) Does anybody have any ideas what could be causing this?

25-03-2009, 05:34 PM	#3
BlackC55 Hardcore MB Enthusiast Join Date: Feb 2007 Location: Horndean, Portsmouth, Hampshire, Southsea Car: C43 AMG with mods, ML270, Mk1 Golf cab. Mk1 Caddy fully restored 7.5T truck Rotax Max race Kart ETC Posts: 8,503	It will be the combination switch (wiper stalk) that is your problem. __________________ Prestige car Service: I am listed here on MBClub please click to see services and discounts available.

25-03-2009, 07:41 PM	#5
jaymanek Hardcore MB Enthusiast Join Date: Nov 2002 Location: Nuneaton Warwickshire Car: 560 SEC AMG Widebody, 560 SEC AMG, W124 500E, W123 280CE, W123 200, R107-500SL Posts: 10,210	its the stalk... we have replaced a few. __________________ Mercland is listed here on MBClub please click to see services and discounts available. 1969 280SL Pagoda in Met Light Blue 1980 123-200 in Sahara Yellow 1985 123-280CE in Champagne 1988 500SL in Met Light Blue Now with Leather 1988 560SEC AMG in Midnight Blue 1989 560SEC AMG Widebody 1989 190E 2.5 Cosworth Dogleg Manual 1993 E500 Brabus in Silver with lots of toys! 1 of 29 UK Supplied Cars Gallery Link

26-03-2009, 09:44 PM	#7
BlackC55 Hardcore MB Enthusiast Join Date: Feb 2007 Location: Horndean, Portsmouth, Hampshire, Southsea Car: C43 AMG with mods, ML270, Mk1 Golf cab. Mk1 Caddy fully restored 7.5T truck Rotax Max race Kart ETC Posts: 8,503	About £75 I think. Plus fitting __________________ Prestige car Service: I am listed here on MBClub please click to see services and discounts available.

25-03-2009, 04:23 PM	#2
Smiley Hardcore MB Enthusiast Join Date: Jun 2008 Posts: 1,618	I would take a look at the relay first; this played up on my w124 and it caused a number of faults. try taking the relay out and replacing; or even better try wiggling it around in its connection whilst the fault is happening; see if it makes a difference. if it does fix it when you move it around then you will need a new relay. If not then the stalk assy itself.

25-03-2009, 07:26 PM	#4
bigyorkshireman New Member Threadstarter Join Date: Mar 2009 Location: Cheshire Car: Mercedes C240 Elegance Posts: 7	Thanks for the advice guys - will try the relay first and then look at the stalk assembly. Thanks again...

26-03-2009, 09:36 PM	#6
bigyorkshireman New Member Threadstarter Join Date: Mar 2009 Location: Cheshire Car: Mercedes C240 Elegance Posts: 7	Thanks for the advice - any ideas what I am looking at cost wise for the indicator stalk replacing?

27-03-2009, 11:20 AM	#8
recycled Hardcore MB Enthusiast Join Date: Feb 2007 Location: northwest/scouseland Car: porsche 911C4s /w202-c180sport Posts: 4,339	does it light up your rear demister by any chance? The button in the middle of the blower dials on the centre console

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