I have heard of this from quite a few people now who have experienced this when jumping 07 and newer mercedes. I checked the recommended boosting procedure and was surprised to read both cars must be off while connecting cables, then start the good car wait 10 minutes then try starting vechile. I really don't understand the significance of both engines being off though..
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92 e300d2.5t
01 e320
05 cdi
85 chev c10
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