What 393.53(c) means in plain language
This citation addresses wear and defects in the core mechanical parts that let you steer your truck. The regulation covers universal joints, ball joints, tie rods, drag links, and pitman arms—the linkages and joints that translate movement from your steering wheel to the wheels themselves.
When an inspector cites 393.53(c), they've found evidence that one or more of these components shows wear, fatigue, or damage. This is different from a complete failure; the part may still function, but inspectors must determine whether it meets the safety threshold. Worn steering geometry can introduce play into the steering response, reduce your ability to control the vehicle smoothly, or eventually fail under load.
What our enforcement data actually shows
Across our 13 million inspection records, we have documented 508 all-time citations for 393.53(c). In the last 12 months and last 90 days, we recorded zero citations for this code—a significant drop from historical enforcement. This code ranks #914 out of 3,036 FMCSR codes by citation volume, placing it well below the median in enforcement frequency.
The out-of-service rate for 393.53(c) stands at 0.0%—meaning every citation in our database resulted in a vehicle that remained in service. This is substantially lower than the all-FMCSR average out-of-service rate of 31.4%, indicating that when inspectors cite worn steering components, they typically view the defect as correctable before the next trip rather than grounds for immediate removal from service.
Who gets cited most
Our inspection records show that citations for worn steering components concentrate in a specific carrier segment. The carrier with the highest citation count in our database is SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV (USDOT 818175) with 12 citations. VRP TRANSPORTES DE MEXICO S DE RL DE CV (USDOT 662058) follows with 6 citations. These patterns reflect the geographic and operational footprint of cross-border and regional freight operations in our dataset.
Regarding vehicle makes, Freightliner trucks account for 76 citations—the dominant share of the 508 total. Kenworth follows with 35, and Utility brand equipment with 34. The concentration in these makes likely reflects their prevalence in long-haul and heavy-duty fleets, where steering components experience cumulative wear over higher mileage.
How severe is this compared to similar codes
Steering maintenance issues occupy a specific niche within vehicle maintenance violations. Our data shows that inoperable required lamps (393.9(a)) generates 660,737 citations with a 15.4% out-of-service rate—far more frequent and more likely to result in immediate removal from service. The general inspection and repair maintenance code (396.3(a)(1)) has 236,919 citations and a 45.3% out-of-service rate, indicating that broader maintenance defects prompt stricter enforcement action.
In contrast, proof of periodic inspection codes (396.17(c) and 396.17C-PI) generate massive volume—198,331 and 212,081 citations respectively—but with 0.0% out-of-service rates, similar to 393.53(c). The slack adjuster code (393.47E), another structural safety component, also shows a 0.0% out-of-service rate despite 180,363 citations, suggesting that component-specific maintenance citations are enforced primarily as warnings or fix-it notices.
How to avoid it
Prevent 393.53(c) citations by building steering inspection into your regular pre-trip routine:
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Check for play in the steering wheel before starting the engine. Grasp the wheel at 3 and 9 o'clock and move it side to side while the truck is parked. Excessive movement without corresponding wheel movement indicates worn universal joints or ball joints.
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Inspect all visible tie rods and drag links for bending, cracks, or loose fasteners. Squat down and look along the front axle assembly. Any visible deformation or missing cotter pins requires immediate attention.
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Feel for vibration or looseness during slow-speed steering. At low speed in a safe area, turn the wheel fully left and right and note whether steering response feels crisp or mushy. Mushy steering often signals worn ball joints or pitman arm wear.
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Check the pitman arm connection at the steering gearbox. This joint, where the steering column linkage attaches, is a common failure point. Grab the arm (when the truck is parked and engine off) and attempt to move it; it should not move independently of the shaft.
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Record your findings in the vehicle inspection report (VIR). Document the condition of steering components at each pre-trip. This creates a history that helps you and your fleet identify deterioration before an inspector does.
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Address any steering play immediately. Do not defer steering repairs. Unlike some maintenance items, steering defects can worsen suddenly and affect vehicle control in traffic or emergency situations.
Freightliner and Kenworth units dominate our citation data, so if you operate one of these models, pay extra attention to the condition of fasteners and joints, which experience high stress on longer routes.