will 385.325(c) put my truck out of service
Yes, most likely. Our inspection records show that 385.325(c) citations result in an out-of-service placement 96.0% of the time. That's dramatically higher than the 31.4% average OOS rate across all FMCSR violations. When you're cited for this code, the inspector will almost certainly place your vehicle out of service immediately, meaning you cannot operate it until the violation is corrected and re-inspected.