SMART for two coupé Operator's Manual page 160

Vehicle care
158
Wet cleaning
smart recommends that you use an approved
car shampoo concentrate and soft top
cleaner.
"Dry clean" the vehicle first.
X
Wash the soft top off using a soft brush or
X
sponge and plenty of lukewarm water.
Then rinse thoroughly with clear water.
X
i
If you have the vehicle cleaned in a car
wash, you may find that some water gets
into the interior.