Error codes on your Mercedes allows you to find specific issues on the vehicle that should be fixed. Sometimes after the device has been fixed you may have error codes won't erase. Removing the battery terminal to reset the error message will not fix the problem and may cause strain on your fuses. Purchasing a code scanner from your local auto supplies store or website will help manually remove the error code. If you erase the error code before the problem is fixed, the error code may return at a later time.
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Purchase a 16pin OBD11 scanner, which will connect to your Mercedes and list current error codes. If your Mercedes was manufactured before 1994, you may have a 38 pin socket, which requires you to purchase a 38 pin scanner instead. Code scanners can be found on sites like eBay, Amazon and OBD2-scanner.com
Connect the OBD11 scanner into the port which should be located near the steering wheel by the dash. Each model Mercedes-Benz may have the connector port in different locations so refer to your owner's manual.
Start the vehicle and wait for any applicable error codes to appear on the scanner. Press either the erase or delete button depending on which scanner reader you purchased. Remove the scanner from the port and turn off the vehicle. Wait approximately 20 minutes and turn the vehicle on to see if the error code was erased.
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