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Change Car Glow Plugs

Intermediate 0h30–2h00 ~50–200£
Estimated time 0h30–2h00
Estimated labour cost ~50–200£
Difficulty Intermediate
Vehicles
Scenic II/Grand Scenic 2003-2010 17
  • 1.5 dCi 100 Diesel (K9K-728 (F7))
  • 1.5 dCi 100 Diesel (K9K-729 (H7))
  • 1.5 dCi 105 Diesel (K9K-732 (P7))
  • 1.5 dCi 105 FAP Diesel (K9K-734 (77))
  • 1.5 dCi 80 Diesel (K9K-722 (D7))
  • 1.5 dCi 85 Diesel (K9K-724 (G7))
  • 1.9 dCi 110 FAP Diesel (F9Q-804 (E8))
  • 1.9 dCi 115 Diesel (F9Q-812 (D8))
  • 1.9 dCi 115 FAP Diesel (F9Q-803 (J8))
  • 1.9 dCi 115 FAP Diesel (F9Q-804 (E8))
  • 1.9 dCi 120 Diesel (F9Q-812 (D8))
  • 1.9 dCi 130 Diesel (F9Q-816 (K8))
  • 1.9 dCi 130 Diesel (F9Q-818 (L8))
  • 1.9 dCi 130 FAP Diesel (F9Q-803 (J8))
  • 1.9 dCi 130 FAP Diesel (F9Q-804 (E8))
  • 2.0 dCi 150 Diesel (M9R-700 (A7))
  • 2.0 dCi 150 Diesel (M9R-721 (B7))
Scenic III/Grand Scenic 2009-2016 16
  • 1.5 dCi 105 Diesel (K9K-832 (G8))
  • 1.5 dCi 110 Diesel (K9K-656)
  • 1.5 dCi 110 FAP Diesel (K9K-636 (A6))
  • 1.5 dCi 110 FAP Diesel (K9K-657 (G6))
  • 1.5 dCi 110 FAP Diesel (K9K-836 (J8))
  • 1.5 dCi 110 FAP Diesel (K9K-837 (N8))
  • 1.5 dCi 85 Diesel (K9K-830 (F8))
  • 1.5 dCi 95 Diesel (K9K-656 (G6))
  • 1.5 dCi 95 FAP Diesel (K9K-846 (R8))
  • 1.6 dCi 130 Diesel (R9M-402 (A4))
  • 1.6 dCi 130 Diesel (R9M-404 (C4))
  • 1.6 dCi 130 Diesel (R9M-414 (E4))
  • 1.9 dCi 130 Diesel (F9Q-872 (P8))
  • 1.9 dCi 130 FAP Diesel (F9Q-870 (N8))
  • 2.0 dCi 16V 150 FAP Diesel (M9R-615 (C6))
  • 2.0 dCi 16V 160 FAP Diesel (M9R-610 (B6))
Scenic IV/Grand Scenic 2016-2025 8
  • 1.5 dCi 110 Diesel (K9K-646 (F6))
  • 1.5 dCi 110 Diesel (K9K-647 (F6))
  • 1.5 dCi 110 Hybrid Assist 48V (MHEV),Diesel (K9K-500 (A5))
  • 1.5 dCi 95 Diesel (K9K-646 (F6))
  • 1.6 dCi 130 Diesel (R9M-409 (E4))
  • 1.6 dCi 160 Diesel (R9M-452 (D4))
  • 1.7 dCi 120 Diesel (R9N-401 (A4))
  • 1.7 dCi 150 Diesel (R9N-400 (A4))

What is the role of Renault Scenic glow plugs?

Glow plugs are used in diesel engines to preheat the combustion chamber before starting, particularly in cold weather. Unlike petrol engines that use spark plugs to ignite the fuel, diesel engines rely on compression ignition. Modern glow plugs also remain active after starting to reduce emissions and noise during the warm-up phase.

When should you change your Renault Scenic glow plugs?

Generally, glow plugs last between 80,000 and 160,000 km. Symptoms of failing glow plugs include: difficulty starting in cold weather, white or grey exhaust smoke on start-up, rough idle during warm-up, the glow plug warning light remaining illuminated, and increased fuel consumption.

How do I know if the Renault Scenic glow plugs need changing?

Via the EOBD diagnostic system, faulty glow plugs will trigger fault codes (typically P0380–P0384 for glow plug circuit faults). Individual glow plug resistance can be measured with a multimeter (typically 0.5–2 ohms for a good plug).

Is it difficult to change Renault Scenic glow plugs?

Difficulty level 3/5: intermediate. Glow plugs can seize in the cylinder head over time due to heat and corrosion, making removal difficult and risking breakage. Key steps: warm the engine first, apply penetrating oil, use the correct glow plug socket, unscrew carefully (do not force — a broken glow plug requires specialist extraction).

3 models covered

Model Year Range Engines covered Fuel
Scenic II/Grand Scenic 2003-2010 2003-2010 1.4 16V, -LPG LPG,Petrol (K4J-730 (D7)), 1.4 16V, -LPG LPG,Petrol (K4J-740 (D7)), 1.5 dCi 100 Diesel (K9K-728 (F7)), 1.5 dCi 100 Diesel (K9K-729 (H7)), 1.5 dCi 105 Diesel (K9K-732 (P7)), 1.5 dCi 105 FAP Diesel (K9K-734 (77)), 1.5 dCi 80 Diesel (K9K-722 (D7)), 1.5 dCi 85 Diesel (… Bioethanol (E85), Diesel, LPG, Petrol
Scenic III/Grand Scenic 2009-2016 2009-2016 1.2 TCe 115 Petrol (H5F-400 (A4)), 1.2 TCe 135 Petrol (H5F-404 (B4)), 1.2 TCe 135 Petrol (H5F-408 (F4)), 1.4 16V TCe 130, -LPG LPG,Petrol (H4J-700 (A7)), 1.5 dCi 105 Diesel (K9K-832 (G8)), 1.5 dCi 110 Diesel (K9K-656), 1.5 dCi 110 FAP Diesel (K9K-636 (A6)), 1.5 dCi 110 FAP Diese… Bioethanol (E85), Diesel, LPG, Petrol
Scenic IV/Grand Scenic 2016-2025 2016-2025 1.2 TCe 115, -LPG LPG,Petrol (H5F-408 (F4)), 1.2 TCe 135 Petrol (H5F-408 (F4)), 1.3 TCe 115 Petrol (H5H-450 (A4)), 1.3 TCe 115 Petrol (H5H-470 (B4)), 1.3 TCe 115 Petrol (H5H-490 (E4)), 1.3 TCe 140 Petrol (H5H-470 (B4)), 1.3 TCe 140 Petrol (H5H-490 (E4)), 1.3 TCe 140, -LPG LPG,Pe… 48V (MHEV), Diesel, LPG, Petrol