What is predictive maintenance?

Instead of waiting for breakdowns or fixed-interval PMs, predictive programs use live sensor data and fault trends to service vehicles only when risk rises. The goal: maximum availability at minimum cost.

Starter stack (what you actually need)

  • Data capture: CAN/OBD readers or gateways; odometer; engine hours.
  • Signals: DTCs, coolant temp, oil pressure, battery voltage, fuel trim, misfire counts, DEF levels, DPF soot/differential pressure, EOT/ECT deltas.
  • Layer: Telematics platform that stores time‑series, flags trends, and opens work orders.
  • People: One maint. lead + dispatcher for triage; weekly 30‑min review.

Signals to monitor (first 90 days)

Signal Why it predicts failure Action threshold (example)
High coolant temp / ECT Cooling issues → roadside failures >105°C for 60s → stop & inspect
Oil pressure drop Lubrication problems → engine wear <15 psi at idle → sample oil
Battery voltage Electrical faults → no‑starts <12.2V parked 24h → test battery
Misfire counts Ignition/fuel issues → power loss > 5 events / 100 km → plug/coil check
DPF soot / differential pressure Restricted exhaust → derate risk DP >10 kPa sustained → forced regen
DTC frequency (same code) Recurring fault → escalating risk 3x in 7 days → open work order

Alert → triage → work order (workflow)

  • Alert: platform raises risk event (ECT high, DTC repeats).
  • Triage: confirm with recent trips + driver note or photo.
  • Action: auto‑create work order with parts checklist and SLA.
  • Close: capture cost, labour, and outcome for model feedback.

30‑60‑90 rollout (starter program)

  • Day 0–30: connect 20% of assets; validate signals; create alert rules; baseline KPIs (road calls, MTBF, PM compliance).
  • Day 31–60: widen to 60%; enable auto work orders; add DPF & misfire logic; weekly scorecards.
  • Day 61–90: full fleet; tune thresholds; review savings; freeze SOP; present ROI.

KPIs that prove it works

  • Breakdowns / 100k km (target: ↓ 25–40% in Q1)
  • Road calls per month (target: ↓ 20%)
  • PM compliance (target: > 95%)
  • Parts spend / vehicle (stabilize or ↓ 10–15%)
  • Mean time between failures (MTBF) (trend ↑)

💬 FAQs

Most systems buffer video and upload only events or on demand. Continuous recording is configurable by policy.
No—start where value is highest (heavy‑use routes, critical assets). OBD for light vehicles, CAN gateway for heavy equipment.
Track breakdowns, road calls, and parts spend vs baseline; include screenshots and before/after charts in quarterly reviews.
Tip: pair predictive alerts with a parts mini‑kit for each vehicle class (sensors, filters, coils). Faster triage, less downtime.