>>The 15-year life still holds.
I don't agree.
From the information that we have, (I assume) the photo was taken in 1999 showing the airbags need replacement in 2014 (15 years later). However in 2002, MB release a technical service bulletin stating the following:
SI91.60-P-0001B Service Information on airbag units 9.4.02
MODELS 107, 123, 124, 126, 129, 140, 163, 168, 170, 201, 202, 203, 208, 210, 211, 215, 220, 230, 461, 463
Replacing airbags at end of service life or expiry date:
Airbags, that were installed in Mercedes-Benz passenger vehicles up
to January 1992 have a service life of 15 years. After this service life
has elapsed, the airbags must be replaced at the customer's cost. The
service life is evident from a sticker that is either on the
B pillar (driver's side) or on the inside of the vehicle's glove
New airbag technology has made lifelong functional
reliability possible, which means that the airbag service life restriction
no longer applies.
This means that:
airbags installed in vehicles up to 1992 have a service life of 15 years and
airbags installed in vehicles after January 1992 have no service life restriction and do not have to be replaced after 15 years.
So the owner can ignore the sticker shown in the photo.
I understand this came about due to tests on old airbags carried out by MB which showed no failures.