A U To M A Tic Locking D Ifferential (Asd) - Mercedes-Benz 350 SDL TURBO 1991 Owner's Manual

A u to m atic Locking D ifferen tial
(A SD )
The au tom atic locking diffe re ntia l
engages w hen there is a diffe re nce in
speed (slip) betw een the fro n t and
rear w h ee ls of ove r 2 km /h (
and the veh icle speed is less than
25 km /h (15.5 m ph). It w ill disen gag e
at speeds above 26 km /h (16.2 m ph).
T he yellow function in dica tor in the
spe ed om ete r com e s on w h e n e v e r
there is a d iffe re nce in speed betw een
the front and rear w h e e ls of over
2 1.2
km /h ( m ph), w arning of slippery
road conditions.
Note:
The au tom atic locking diffe re ntia l w ill
not en gage at speeds ab ove 25 km /h
(15.5 m ph). H ow ever, above this
speed, a lim ited-slip effect of up to
35% is alw ays present.
In steering lock position 2, the yellow
fun ction in dica tor lam p and the yellow
A S D in dica tor lam p in th e in stru m en t
clu ste r should com e on and then m ust
go out w ith the e n gine running.
If the A S D in dica tor lam p com e s on
1.2 m ph)
w ith th e e n gine running, a m alfunction
has been de tected. W e reco m m en d
th a t you visit an authorized
M E R C E D E S -B E N Z d e a le r as soon as
possible to have the A S D checked.
N otes:
W hen testing the parking brake on a
brake test dyn am o m eter, turn off the
e n gine to avoid en ga gin g the au to­
m atic locking differential.
In w in te r op era tion, the m axim um
e fficie n cy o f the au tom atic locking
d iffe re n tia l can only be attained
th ro u g h th e use o f M +S radial tire s on
all fo u r w heels.
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