Another data point for starter contacts: 1997 LX450, 70k mi, mostly city driving (frequent starts). Having no problems with my starter, I ordered starter contacts / plunger from CDan about 2 weeks ago as PM, but haven't had time to do the rebuild yet. This morning I had my first turn-the-key-but-no-starter-engagement, then I tried again and it started fine.
If I can draw any conclusions for PM from my experience, it would be this: my truck is 8 years old and had 70k mi. on it when this happened. To be safe, if my driving pattern remains fairly constant, I will replace starter contacts / plunger every 7 years / 60k mi. from now on. Note that this applies to a vehicle with the 2kW starter and one used primarily for city driving (frequent starts).
If I can draw any conclusions for PM from my experience, it would be this: my truck is 8 years old and had 70k mi. on it when this happened. To be safe, if my driving pattern remains fairly constant, I will replace starter contacts / plunger every 7 years / 60k mi. from now on. Note that this applies to a vehicle with the 2kW starter and one used primarily for city driving (frequent starts).