In four years this is the forth regulator. The one in the car when I got it went bad, replaced with KAE before I knew any better. One year later I'm dpi gig again but this time with a genuine Bosch unit. Had the original alternator rebuilt six months ago (local trusted guy who also added some diodes) which at the time I put a new Bosch unit in. Now my battery light comes on yesterday and I just stopped by auto parts store and they tell me battery is fine and the regulator is bad!

I removed it and the brushed seem fine, and are adequate in length. However, the part that the brushes contact (rotor?) seemed like a pretty good channel has been worn into it.

Why does my car keep eating Voltage Regs?

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1987 300TDT - 195,000 (Original #14 head)
1993 190E 2.3 - 105,000
1981 300D - 250,000