Code 0688


Code 0688 Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Yes but still Mechanic's Assistant: What is the make/model/year of your car? Mercedes sls 2011 Mechanic'...

Code 0688 Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Yes but still Mechanic's Assistant: What is the make/model/year of your car? Mercedes sls 2011 Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? Yes

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* to Just Answer! I will be assisting you with your questions today. Give me one moment while I review this.

Hello
Automotive Expert
I’m very sorry that you’re having this issue and together, we will get this figured out. I will need your help too because I can’t see, touch, hear or smell anything that’s going on with your vehicle. We may also require some specialized testing tools in order to assist us in diagnosing the problems due to the complexity of today’s vehicles. JA will offer a phone call to you at an additional fee, it’s your choice. Please be patient with my replies, I reply back in question order received. If I send you an attachment, I will tell you, BUT, you will NOT get it on a phone; you must be on a tablet or PC. Please let me know when you are satisfied with my answers too so we can close out your question. That code says ECM relay or security issue. Either way, it will not go away by resetting it. It is a hard fault that needs to be addressed. You need to attach a scan tool and begin with bidirectional tests on the computer system. This will guide us to the next move. Thanks again and all the best:) Ron

Now phone usa um
Automotive Expert
Agreed. Thanks again, Ron

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