Parts for your 2023 Mitsubishi Eclipse cross-Drive belt

2023 Mitsubishi Eclipse Cross drive-belt: what’s fitted, what isn’t, and how to look after it

Here’s the short of it, backed by technical docs: the 2023 Mitsubishi Eclipse Cross with the 1.5‑litre turbo petrol engine uses a multi‑ribbed accessory drive-belt (serpentine belt), while the 2023 Eclipse Cross PHEV does not run a conventional accessory drive-belt because its key auxiliaries are electrically driven. This comes straight from Mitsubishi workshop literature for the 4B40 petrol engine (Drive Belt section) and the Eclipse Cross PHEV manuals outlining the electric A/C compressor and electric pumps, plus the MY23 Service and Warranty logbook that lists the belt as a regular inspection item on petrol models.

• Mitsubishi Motors Eclipse Cross (1.5L Turbo 4B40) Service Manual – Engine Mechanical/Drive Belt (serpentine) section
• Mitsubishi Motors Eclipse Cross PHEV Service Manual – Hybrid System/Engine Auxiliary Equipment (electric A/C compressor and no alternator belt)
• Mitsubishi Motors AU/NZ Service & Warranty Booklet (MY23 Eclipse Cross) – periodic accessory belt inspection on petrol models

For 2023 Eclipse Cross petrol models, the drive-belt is the quiet achiever up front, looping around pulleys to spin the alternator and A/C compressor, and on some specifications the engine’s water pump. It’s a multi‑ribbed serpentine design with an automatic tensioner, so there’s no manual adjustment during normal servicing. If that belt slips or wears out, you can cop flat‑battery dramas, dodgy A/C performance, overheating, or an annoying squeal on cold starts.

Servicing-wise, it’s a “inspect every service, replace on condition” item in Australia and New Zealand. A good workshop will check belt condition and tensioner operation at each scheduled visit, typically every 12 months/15,000 km as per the logbook. If there are cracks across the ribs, fraying at the edges, chunks missing, glazing (a shiny, slippery look), or it chirps and squeals, it’s time to bin it. Many owners see replacement somewhere around 90,000–120,000 km or at the 6–8 year mark, but heat, dust, towing, and lots of short trips can bring that forward. Sticking with a quality, correct‑spec multi‑rib belt and a healthy tensioner is the go, belt dressings and sprays are a band‑aid at best.

Replacement is straightforward for a pro: relieve the auto‑tensioner, slip the old belt off, route the new one as per the under‑bonnet diagram, and confirm tracking and tensioner movement with the engine running. If there’s any wobble, rust dust, or noise from idlers or the tensioner, do them at the same time. It’s affordable preventative maintenance that keeps the charging system and climate control sweet as.

For 2023 Eclipse Cross PHEV owners, there’s no conventional accessory drive-belt to service. The hybrid system uses an electric A/C compressor, electric cooling pumps, and no alternator belt drive. That cuts down routine maintenance and eliminates belt noise outright—one of the perks of the PHEV layout as outlined in Mitsubishi’s hybrid system documentation.

• Does the 2023 Eclipse Cross have a timing belt?
  The 1.5‑litre turbo petrol uses a timing chain for the cam drive, not a timing belt. That’s separate from the accessory drive-belt discussed here. The PHEV’s engine also uses a chain. Timing chains are designed for engine life but still rely on good oil quality and change intervals.
• How often should the drive-belt be replaced on the petrol model?
  Have it inspected at every scheduled service and replace on condition. Many belts last 90,000–120,000 km, but heat, age, and use can shorten that. If it’s noisy, cracked, glazed, or the tensioner is tired, replace sooner rather than later.
• What are the tell‑tale signs a belt is on the way out?
  Cold‑start squeals, chirps when the A/C kicks in, visible cracking or fraying, a shiny/glazed rib surface, battery light flickers, or weak A/C performance. Any of those is a nudge to get it checked.