NJ State Inspection cannot interface with ODBII system - Mercedes-Benz Forum

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post #1 of 8 (permalink) Old 04-17-2007, 07:27 PM Thread Starter
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NJ State Inspection cannot interface with ODBII system

So I just got a 06 Mercedes Benz CLK 350 with 5k miles. I went to get it inspected from a private facility in New Jersey. But I failed inspection because my car couldn't interface with their system as far as ODBII. It just kept saying connection failed. So I took it to the dealer and told them about the problem. They hooked it up and gave me print out giving me information about the car. Now the state inspection facility is saying that the ODBII module is not working while MB dealer is blaming the state's testing equipment. I don't know what to do. Would a regualr ODBII reader work on this car so I can just check for myself.
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post #2 of 8 (permalink) Old 04-17-2007, 08:31 PM
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If the private facilities' OBDII equipment can't interface with a Mercedes-Benz, but the factory authorized dealer can use the OBDII port, I'd have to "guess" the private facility has the problem. If this is a PPI inspection, I'd just use the dealer. They SPECIALIZE in finding busted stuff that needs fixing.

The last time I brought my car in, they replaced the motor mounts, flex disc, and resealed the rear diff. It was all covered by Mercedes-Benz, but they found it anyway.
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post #3 of 8 (permalink) Old 04-18-2007, 12:51 PM Thread Starter
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Here's the answer I got from the state department:

OK, here's the issue and how we have to proceed forward.

By State and Federal law, all vehicles must be able to communicate in "generic" mode. When the PIF inspected the vehicle, he was unable to get it to communicate in this mode. When you went to the dealer, they attempted communication in what we call "manufacturers" mode. This provides communication for them to diagnose the vehicle but it doesn't conform to law which requires that all vehicles must communicate in "generic" mode.

The next thing that needs to happen is the vehicle must be taken to an Emissions Repair Facility (ERF). They need to check out the OBD connection and see what the problem is. It could be as simple as the computer needing "re-flashed" or maybe it's a warranty item because it wasn't connected right from the factory or another common problem is installation of an after-market stereo system and the person went direct through the connector for the power source, not understanding the designated requirements of the "PINs".

Once the diagnosis and repair are done, the ERF can fill out the paperwork you were given. Be sure they "stamp" the paperwork with their ERF ID #. We are not able to accept any paperwork that isn't stamped.
Be sure to keep all receipts because if the repairs go beyond $450.00 and the problem still isn't resolved, you can apply for a "waiver". The ERF would still fill out the paperwork and provide the receipts and then when presented for inspection you would just advise the inspector that you are applying for a waiver. The vehicle would be inspected as normal and if communication still doesn't work, it would then be passed down to the lower emissions test. At this point, the vehicle would be required to pass the idle emissions test, tested via the tailpipe.

So what he's saying that the car should interface no matter what. So something might be wrong with the car. Right?
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post #4 of 8 (permalink) Old 04-18-2007, 03:44 PM
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Send a message via Yahoo to Mercedes Benz of Florida
Try going to ANOTHER Inspection Facility

See if THOSE folks can interface properly.

Good Luck!

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Richmond County

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post #5 of 8 (permalink) Old 04-18-2007, 03:58 PM Thread Starter
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Went to 3 different ones already. All of them cannot connect to OBDII. They even tried the code reader just to see if it connect, but no such luck. It's definitely the car.
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post #6 of 8 (permalink) Old 04-18-2007, 06:39 PM
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With mid-quality OBDII scanners for $70 why don't you buy one and try yourself?
Than take it to the dealer and ask them to repeat the scanning with your scanner.
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post #7 of 8 (permalink) Old 04-19-2007, 12:40 PM Thread Starter
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Just got a call from the dealer and they did find something. They have been working on it all day today and the car will be ready sometime tomorrow. Thank God, becuz I was about to lose it.
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post #8 of 8 (permalink) Old 04-23-2007, 08:15 AM Thread Starter
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So I talked to the dealer. The guy said that they found some old software and have updated it. But when they connected their OBD2 scanner, it wouldn't connect. They think the problem is within the software. So they called their independant engineer so he can help them with the problem. I have been without the car for a week now. I hope they fix this.
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