After reading all the posts about the K40 module going out, I wonder if I should just buy one and have it on hand for the inevitable. AFAIK, mine is original. I have some parts credit to use up at the local dealer. Should I add the K40 to my shopping list? My car isn't home right now to look. Is the part number on the unit or does someone have it off the top of their head?

Thanks.

__________________
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