Steve - my alarm was not set, but my internal battery certainly was dead. That's the reason I took it out, to try to replace it. Turns out I didn't have the right soldering iron to do the job, so for the time being I just reinstalled it, not expecting it to work without a trip to the dealer.

__________________
Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles