W203 ABS Light
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Joined: Aug 2018
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W203 ABS Light
Got a late model W203 with an ABS light that illuminates after setting off. I've had my STAR on it and there's a code for the right hand side front ABS sensor but on checking live data there's no speed reading whatsoever from the front left side and the front right hand side is intermittent.
I've changed the ABS sensor on then left hand side hoping for a simple fix but no change. I've then checked the continuity of the wiring from the sensor to the ABS/ESP unit and all OK. I then changed the ABS ring and still no improvement.
I'm running out of ideas except to think there's a module issue, but it appears to be failing in a strange way (i.e. not reading the ABS/Speed sensors). Has anyone come across one failing this way before? There's no codes on star for anything except the front right hand side ABS sensor and a cruise control issue which I think is related to the first code.
I'm wondering if the ABS module has partially failed causing the lack of reading of the left hand sensor? The error code reading of the right hand side sensor is a strange one also. I'm not that great using a multimeter so was just wondering if anyone had tested their ABS speed sensors with a multimeter and how? Also are the sensors on the W203 active or passive?
I've changed the ABS sensor on then left hand side hoping for a simple fix but no change. I've then checked the continuity of the wiring from the sensor to the ABS/ESP unit and all OK. I then changed the ABS ring and still no improvement.
I'm running out of ideas except to think there's a module issue, but it appears to be failing in a strange way (i.e. not reading the ABS/Speed sensors). Has anyone come across one failing this way before? There's no codes on star for anything except the front right hand side ABS sensor and a cruise control issue which I think is related to the first code.
I'm wondering if the ABS module has partially failed causing the lack of reading of the left hand sensor? The error code reading of the right hand side sensor is a strange one also. I'm not that great using a multimeter so was just wondering if anyone had tested their ABS speed sensors with a multimeter and how? Also are the sensors on the W203 active or passive?
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Joined: Jan 2006
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From: Pasadena, CA
2002 C230K, 2013 BMW 328, 2015 BMW X5
Got a late model W203 with an ABS light that illuminates after setting off. I've had my STAR on it and there's a code for the right hand side front ABS sensor but on checking live data there's no speed reading whatsoever from the front left side and the front right hand side is intermittent.
I've changed the ABS sensor on then left hand side hoping for a simple fix but no change. I've then checked the continuity of the wiring from the sensor to the ABS/ESP unit and all OK. I then changed the ABS ring and still no improvement.
I'm running out of ideas except to think there's a module issue, but it appears to be failing in a strange way (i.e. not reading the ABS/Speed sensors). Has anyone come across one failing this way before? There's no codes on star for anything except the front right hand side ABS sensor and a cruise control issue which I think is related to the first code.
I'm wondering if the ABS module has partially failed causing the lack of reading of the left hand sensor? The error code reading of the right hand side sensor is a strange one also. I'm not that great using a multimeter so was just wondering if anyone had tested their ABS speed sensors with a multimeter and how? Also are the sensors on the W203 active or passive?
I've changed the ABS sensor on then left hand side hoping for a simple fix but no change. I've then checked the continuity of the wiring from the sensor to the ABS/ESP unit and all OK. I then changed the ABS ring and still no improvement.
I'm running out of ideas except to think there's a module issue, but it appears to be failing in a strange way (i.e. not reading the ABS/Speed sensors). Has anyone come across one failing this way before? There's no codes on star for anything except the front right hand side ABS sensor and a cruise control issue which I think is related to the first code.
I'm wondering if the ABS module has partially failed causing the lack of reading of the left hand sensor? The error code reading of the right hand side sensor is a strange one also. I'm not that great using a multimeter so was just wondering if anyone had tested their ABS speed sensors with a multimeter and how? Also are the sensors on the W203 active or passive?
Thread Starter
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No I haven't but I purchased the car with the fault. Climate and Stereo work fine so I have no reason to think they've been tinkered with but obviously can't be sure.
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A normal diagnostics with ABS capability will be able to read it. STAR is not exclusive for reading codes, but does give extra versatility as it was built specifically for said vehicles!
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2005' W203 C230 Kompressor Avantgarde
Thanks Scrappy_doo..... yep! I'm just looking for a brand new good scanner to reset the error codes and check everything... I've found some equipaments, but all from China (hmmmmm... i'm little bit concerned about the quality)... Here in Brazil we have no options for this kind of scanner... unfortunatelly.
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Thread Starter
Junior Member
Joined: Aug 2018
Posts: 42
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Various
Thanks Scrappy_doo..... yep! I'm just looking for a brand new good scanner to reset the error codes and check everything... I've found some equipaments, but all from China (hmmmmm... i'm little bit concerned about the quality)... Here in Brazil we have no options for this kind of scanner... unfortunatelly.
or for an MB specific tool have heard icarsoft MB is an excellent budget STAR alternative. A lot of these devices are made in China anyway so I wouldn't be too sceptical!
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S203
Hey, i know this is an old post, but i have the same issues. Could you please explain which plug you mean. I had some problems with the A/C but i could never imagine that this is related with the ABS sensor. I have exactly the same failing Sensor. Front right. I changed it twice but still nothing. I remember when it first failed, i heard something like an electrical short circuit sound ( or something like a relay opening and closing really fast).
