Technically the manual is correct, because OEM shocks are nitrogen filled and do affect ride height. I would guess that camber readings would be affected slightly and caster to an even lesser degree. Mercedes is anal about such things as torque specs for the screws that hold the glove box door on. So looking at the practical side,I'd have to agree with your dealer.After over 30 years in the business,I've never seen anyone send a car in for alignment just for changing shocks.
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