KNOWN FAULTS · Renault

Renault Scénic (II) / Grand Scénic (II) 1.5 dCi (K9K) common problems.

2003–2009 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

4 known faults with sources

Connecting-rod bearing wear on the 1.5 dCiEngine (rod bearings)

Engine / equipment: 1.5 dCi (K9K), early series
Period mentioned: Approx. 2001–2006
Symptoms: Engine knocking, especially when cold; low oil pressure; at worst, engine failure.
Possible cause described: The connecting-rod bearings wear early, especially on cars driven a lot at low revs. It mainly affects models before 2006; Renault covered much of these repairs.
Check for the garage: Listen to the engine from cold, measure oil pressure and check the oil-change history. If it knocks, do not keep driving.
Cost cited in the source: No verified estimate; from replacing the bearings to replacing the engine.A rough figure from the original database, not an up-to-date quote.

1.5 dCi pump and injectors with Delphi systemInjection / turbo

Engine / equipment: 1.5 dCi (K9K) with early Delphi injection
Period mentioned: Approx. 2001–2011
Symptoms: Injection warning, jerking, rough idle, loss of power, smoke and sometimes a no-start.
Possible cause described: In the early years, the Delphi high-pressure pump can shed metal filings that contaminate the circuit and damage the injectors one after another.
Check for the garage: Read the codes (e.g. P0087, low rail pressure) and look for filings in the diesel filter. If the circuit is contaminated, replace pump, rail and injectors and clean the tank and lines.
Cost cited in the source: Approx. €1,800–3,500 (pump, four injectors, rail and circuit cleaning)A rough figure from the original database, not an up-to-date quote.

Applies if: Only with the automatic electric parking brake.

Electric parking brake stuck or warning (Scénic II)Brakes

Engine / equipment: Automatic parking brake
Period mentioned: Approx. 2003–2009
Symptoms: Parking-brake warning on, brake that will not release or stays locked on both wheels, codes DF043 / DF049.
Possible cause described: Owner reports: failure of the electric motor or a relay in the brake unit, or a brake-pedal sensor sending a wrong reading.
Check for the garage: Read the codes with a diagnostic tool; if the brake stays locked, use the manual release (in the boot, next to the spare wheel). After the repair, relearn the slope sensor.
Cost cited in the source: No verified estimate; depends on whether the unit is repaired or replaced.A rough figure from the original database, not an up-to-date quote.

Applies if: Only with a key card (keyless start).

“Card not detected”: the car does not recognise the key cardElectrical and electronic systems

Engine / equipment: Hands-free card and cabin unit (UCH)
Period mentioned: Approx. 2003–2009
Symptoms: The cards stop opening or starting the car, hands-free and with the buttons, and “Card not detected” appears; sometimes it clears by itself after a few minutes.
Possible cause described: Owner reports: the cabin unit (UCH) stops recognising the cards’ code; described as common on the Scénic II and Mégane II.
Check for the garage: Try the other card and its battery; at the dealer or with a diagnostic tool, check the UCH and relearn both cards.
Cost cited in the source: No verified estimate; relearning the cards is usually a short garage job.A rough figure from the original database, not an up-to-date quote.