Just a heads up for folks with newer cars (not really applicable to anything before the W210).
Last Sunday, I used my Super Star M6+ "tablet" system to pull and review any and all codes from my 2007 E63 AMG. Nothing of import came up, other than a recurring code that signals that the passenger side door mirror heater is inop. This is a minor niggle that I'll get around to diagnosing in the future -- nothing too important. I cleared and reset all codes after pulling and reviewing things. I didn't drive the car again from Sunday afternoon through Thursday this week. Current mileage is 25,950.
Took the car in for its bi-annual emissions test per the State of Maryland. They plugged into the OBD2 port under the dash, and were unable to get any reading from the car's systems in terms of emissions-related data.
The tech asked me if I'd recently had the car worked on, or had changed out the battery. I told him no, but then thought of the scan and delete I'd done with the Super Star M6+ system.
He told me to drive the car normally for a week or so, and then bring it back in. The slip from the Maryland OBD Readiness Report says, "Your vehicle is not ready to be tested. Multiple diagnostic monitors have not had an opportunity to run. Drive normally for one week, then return for testing. You do not need to make vehicle repairs at this time. If your "Valid Through" date is within two weeks, please speak to a Customer Service Representative in the station office about getting an extension."
My expiration date is March 26th, so I have plenty of time and will drive the car for a week or two and then bring it back in for the test.
I hadn't though that the STAR/DAS code reset, would also erase/reset all of the emissions-related pointers in the system. So, for those with a more modern car that uses the OBD2 port for emissions reading/testing purposes, make sure you drive your car for a few days before having it tested, if you pulled and erased your codes using the MB diagnostic equipment.


Last Sunday, I used my Super Star M6+ "tablet" system to pull and review any and all codes from my 2007 E63 AMG. Nothing of import came up, other than a recurring code that signals that the passenger side door mirror heater is inop. This is a minor niggle that I'll get around to diagnosing in the future -- nothing too important. I cleared and reset all codes after pulling and reviewing things. I didn't drive the car again from Sunday afternoon through Thursday this week. Current mileage is 25,950.
Took the car in for its bi-annual emissions test per the State of Maryland. They plugged into the OBD2 port under the dash, and were unable to get any reading from the car's systems in terms of emissions-related data.
The tech asked me if I'd recently had the car worked on, or had changed out the battery. I told him no, but then thought of the scan and delete I'd done with the Super Star M6+ system.
He told me to drive the car normally for a week or so, and then bring it back in. The slip from the Maryland OBD Readiness Report says, "Your vehicle is not ready to be tested. Multiple diagnostic monitors have not had an opportunity to run. Drive normally for one week, then return for testing. You do not need to make vehicle repairs at this time. If your "Valid Through" date is within two weeks, please speak to a Customer Service Representative in the station office about getting an extension."
My expiration date is March 26th, so I have plenty of time and will drive the car for a week or two and then bring it back in for the test.
I hadn't though that the STAR/DAS code reset, would also erase/reset all of the emissions-related pointers in the system. So, for those with a more modern car that uses the OBD2 port for emissions reading/testing purposes, make sure you drive your car for a few days before having it tested, if you pulled and erased your codes using the MB diagnostic equipment.

