Modify coding to erase SRS code B48 Unit (child seat recognition sensor) - Mercedes-Benz Forum

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post #1 of 12 (permalink) Old 08-10-2011, 01:29 AM Thread Starter
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Modify coding to erase SRS code B48 Unit (child seat recognition sensor)

I changed the coding to show there is no sensor mat in the car and the code I had did not come back up but I did get a different fault code regarding the coding error. Has any one successfully changed coding in order to get the SRS light off?

1999 SL500 155k miles
2003 C32 155k miles
2002 S55 178k miles
2004 S430 210k miles
2003 E320 110k miles
2004 E500 180k miles
2003 E500 120k miles
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post #2 of 12 (permalink) Old 08-10-2011, 01:54 AM
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I changed the coding to show there is no sensor mat in the car and the code I had did not come back up but I did get a different fault code regarding the coding error. Has any one successfully changed coding in order to get the SRS light off?
Well, yes, but it was on a different care where after other modifications no other option existed. In this case I feel you should fix the sensor.

Did you unplug the sensor cable? Did you try it via special functions or from the developer menu?
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post #3 of 12 (permalink) Old 08-10-2011, 11:28 PM Thread Starter
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Thanks, I did every thing except for unplug the connector now my problem is solved. I'm pretty sure I was in the special functions area because I remember not being able to get in to the developer section with out a password

1999 SL500 155k miles
2003 C32 155k miles
2002 S55 178k miles
2004 S430 210k miles
2003 E320 110k miles
2004 E500 180k miles
2003 E500 120k miles
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post #4 of 12 (permalink) Old 08-29-2011, 01:26 PM
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Cool Playing with FIRE ???

This is all discussed IN DETAIL, all aspects, and simple repair options in the 210 forum,
PHOTO DIY SRS SEAT SENSOR in the diy section.

Just be aware that by re coding, you are altering the fireing sequence and/or eliminating the air bag system.

You might just have a bad wire, or the real fix in diy is less than 150 U$.

You might want to look in the 210 diy thread.

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post #5 of 12 (permalink) Old 12-22-2011, 12:51 PM Thread Starter
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I could not locate that topic in the dyi 210 sticky

1999 SL500 155k miles
2003 C32 155k miles
2002 S55 178k miles
2004 S430 210k miles
2003 E320 110k miles
2004 E500 180k miles
2003 E500 120k miles
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post #6 of 12 (permalink) Old 05-08-2015, 10:02 AM
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hi i am new to the forum were you ever able to bypass the child seat sensor issue you had by changing the coding if so how did you do it ? thanks ahead
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post #7 of 12 (permalink) Old 05-11-2015, 01:46 AM
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hi i am new to the forum were you ever able to bypass the child seat sensor issue you had by changing the coding if so how did you do it ? thanks ahead
To change the coding requires the use of DAS, this is the MB diagnostic equipment and it is very expensive. There is another way round this though;

http://www.benzworld.org/forums/10564729-post131.html

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post #8 of 12 (permalink) Old 05-11-2015, 10:29 AM
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i bought one of those emulators plugged it in because the one i bought already had the plug for Ireland, its from an ebay store named airbag 360 anyways i plugged it in cleared the code and the code came back. I used a carsoft scan tool that confirmed everything the dealer said its not a problem with the seat mat sensor but the issue is with the child seat recognition sensor b48 code to be exact. side note i just had my seats reupholstered its a 2003 sl500 the tech at the mercedes dealer claims their is an actual sensor built into the actual seat cover anybody ever heard of this any advice or direction would be appreciated. is it possible that a dealer would do the bypass ?
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post #9 of 12 (permalink) Old 05-11-2015, 01:52 PM
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I can't see a dealer taking the liability of disabled a safety feature.
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post #10 of 12 (permalink) Old 05-11-2015, 02:16 PM
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I can't see a dealer taking the liability of disabled a safety feature.
+1, Not a chance in hell.

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