Ford C-Max

The 1.6 Duratec-Ti HXDA shares the same risk as other Duratec engines regarding inlet swirl flaps. On aged inlet manifolds the flaps can break off and enter the engine.

Symptoms: Rattling in the intake, sudden power loss, engine damage

The 1.6L Duratec-Ti HXDA (Focus Mk2, Galaxy/S-Max Mk1) can wear the chain tensioner at high mileages or with extended oil change intervals. Rattling on cold start is the early warning sign.

Symptoms: Rattle on cold start, sounds like a diesel, disappears after warm-up

At high mileages the valve stem seals in the 1.6 Duratec-Ti HXDA become porous. Blue smoke on cold start is typical. Oil consumption rises to 0.3–0.5 L/1,000 km.

Symptoms: Blue smoke on cold start, increased oil consumption, dark deposits at the exhaust tail pipe

On the 1.6 Ti-VCT, the cam phasers and VCT actuators wear from around 150,000 km. A non-replaceable fine filter in the cylinder head blocks up with metal particles and restricts oil pressure to the variable valve timing system.

Symptoms: Metallic rattle on cold start; power loss when warm; rough idle; engine management faults.

The water pump on the 1.6 Ti-VCT Duratec in the Focus Mk2 shows increasing bearing wear from 150,000 km. Timely replacement prevents overheating and consequential damage.

Symptoms: Grinding or rattling noises from the engine bay; minor coolant loss; engine temperature rising under load.

On the early C-Max DM2 of model years 2004 to 2006, the alternator failed frequently. Ford improved this on later production runs. Second-hand early examples should be checked for the charge warning indicator.

The dual-mass flywheel in the C-Max DM2 — particularly the diesel variants (1.6 and 2.0 TDCi) — wears prematurely. A complete clutch kit is often renewed at the same time.

The C-Max Mk1 shares the Focus's rust susceptibility. Door lower edges, window frames, door hinges, and sills typically corrode after 6–10 years. Inadequate stone-chip protection encourages early corrosion on wheel arches and door lower edges.

The ABS control module (fault code C1288) of the C-Max Mk1 fails and causes the ESP warning light to stay on permanently. The problem was resolved in the later Mk2 with a revised unit. Repair or replacement of the ATE ABS module is required.

The tailgate latch switch of the C-Max Mk1 allows moisture ingress, particularly in cold weather. The tailgate can open on its own while driving. The problem mainly affects vehicles up to 2007 and should be treated as a safety issue.

The instrument cluster of the C-Max Mk1 fails in the cold due to cold solder joints on the PCB. The speedo, rev counter, and all warning lights temporarily drop out completely. Everything works again once warmed up. Re-soldering or replacing the control unit is the solution.