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Old 01-24-2003, 01:00 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The later S500's use a 150A alternator & that is also the rating of the replacement for the 143A as well.
Most of the V-8 S-class need more power than the 6-cyl cars require.
OF course on ANY car more power can be consumed than the alternator can put out.

How long did the alternator last?
Did they try a replacement voltage regulator?
Most of the time the brushes are worn out on the regulator & the whole alternator will get replaced!!
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