will 172.602C1 put my truck out of service
No. Across our 13 million inspection records, 172.602C1 citations have never resulted in an out-of-service placement. The 0.0% OOS rate means this violation will not remove your truck from operation immediately.
However, this does not prevent other violations found during the same inspection from doing so. If emergency response information maintenance issues are documented alongside equipment defects, those separate citations may carry OOS consequences.