MAN Engine Hours Issue

If it's installed on the boat, it should work. Otherwise, owners that do what you mention go to sell a boat and have 40 items on the survey of band-aids and booboo's.

That's what happened on the MAN boat I managed. Battery switches were turned off for a few days. Port engine then showed 99999 hours when battery switches were turned off. Starboard was fine......two weeks later the stbd showed 99999 hours..... removal of the boards is pretty easy. Will need a MAN mechanic with the 2 laptops to get the hours from the other boards where they are stored (engine ECMs?) and put the info in the new boards.

My dealer insisted on pulling it up with the laptop, BUT I didn't know the exact hours, just very close. The board itself, slides right out just like any card in a desktop computer.

I think I'll wait to CaboFly goes through the process to see how things go. I am leaning to doing it in the Fall at this point as I don't want to lose a month. As long as the box is keeping track of the real hours then I'm comfortable with a rough idea. Hopefully the port engine hours will continue to work for the season.

This sounds great. I'm going to send mine in after the season. Thank you for the info!

Hi all.

I have a project with a detailed description of how to independently restore an MMDS-CR after a engine failure. The project includes a detailed description, cable diagram (very simple), software.
Using this project, you can independently change the engine hour reading at any time.
I worked for MAN as an engineer, now due to the fact that there is a war in my country I am not working (the sea has been closed).

If you are interested in this project, write to on Skype ivan_nikol_

Regards, Ivan

I have a 2008 Cabo with twin 1100s. The actual hours are about 1800.
I am experiencing the wonky hours issue now. The boat lives on an island called Antigua. I'm Canadian, so the boat comes out of the water in May till October. Not knowing better, power to the engines and boards was off.
Sure enough the hours are off the charts. I keep an engine maintenance log, travel log and manually record hours.
In addition to the erroneous hours, my engine displays are intermittent....
sometimes I get RPM displays, sometimes not. I get coolant pressure alarms one minute, then I don't. Can all of this be related to the battery failure in the boards.
Both engines display the same symptoms.
The boat "Lalaland" is going on the market later this year. I just couldn't offer it for sale in this condition.
Any assistance is appreciated.
M.

Good afternoon.
You're right, this is due to the failure of the batteries installed on the board. They need to be replaced - the system will immediately work stably. But the engine hours will be chaotic. In order to set the correct engine hours, my project is needed.

Thank you.

In order to set the correct engine hours after replacing the battery, you can use my project. To do this, you need to assemble a cable from three wires and two connectors. I'm posting the diagram.

Thank you.
M.

Does the offer stand?

Yes does the offer stand