Maybe a problem with the instrument cluster

[Uncle Sam]

We went on a small trip this past weekend and about 30 miles into the trip I was slowing down to make a left turn onto I75 north and all at once the dash started beeping, the speedmeter went up to ablut 60 mph and the seat belt sign was on. It only lasted for about 5 to 10 seconds. I unhooked my seat belt and refastened it and then after a short time the seat belt sign went off.
I have never had this happen before and I hope it is not the instrument cluster going out.
Any ideas?
This is on a 2004 w22 workhorse

[Uncle Sam]

We went on a small trip this past weekend and about 30 miles into the trip I was slowing down to make a left turn onto I75 north and all at once the dash started beeping, the speedmeter went up to ablut 60 mph and the seat belt sign was on. It only lasted for about 5 to 10 seconds. I unhooked my seat belt and refastened it and then after a short time the seat belt sign went off.
I have never had this happen before and I hope it is not the instrument cluster going out.
Any ideas?
This is on a 2004 w22 workhorse

[dieselclacker]

Welcome to the club Sam. What you describe is about normal operation for the cluster. I think its happened to about everyone here on the board at one time or another. Certainly has done the same several times on our Workhorse.

Dieselclacker