Change Car Particulate Filter (DPF) BMW X4
Change Car Particulate Filter (DPF)
| Estimated time | 0h30–9h00 |
|---|---|
| Estimated labour cost | ~50–900£ |
| Difficulty | Easy |
| Vehicles |
X4 2014-2018 6
X4 2018-2025 10
|
| Check the catalytic converter | 0h30 |
| Remove/refit the catalytic converter | 0h45–3h00 |
| Renew the catalytic converter | 0h45–3h00 |
| Remove/refit the diesel particulate filter | 3h00–17h00 |
| Renew the diesel particulate filter | 3h00–17h00 |
| Remove/refit the diesel particulate filter/catalytic converter assembly | 3h00–17h00 |
| Renew the diesel particulate filter/catalytic converter assembly | 3h00–17h00 |
| Prepare the catalytic converter heat shield for installation* | 0h45 |
| Remove/refit the diesel particulate filter control unit | 1h00 |
| Renew the diesel particulate filter control unit | 1h00 |
| Check/top up the diesel particulate filter fuel additive | 0h45 |
| Renew the diesel particulate filter fuel additive reservoir | 2h30–3h00 |
| Remove/refit the diesel particulate filter fuel additive reservoir | 2h30–3h00 |
| Remove/refit the AdBlue system control unit | 0h30 |
| Renew the AdBlue system control unit | 0h30 |
| Remove/refit the diesel particulate filter fuel additive injector | 2h30 |
| Renew the diesel particulate filter fuel additive injector | 2h30 |
| Remove/refit the AdBlue tank | 2h30–3h00 |
| Renew the AdBlue tank | 2h30–3h00 |
| Remove/refit the AdBlue injector | 2h30 |
| Renew the AdBlue injector | 2h30 |
| Drain/refill the AdBlue tank | 0h45 |
| Renew the catalytic converter gasket | 10h00 |
What is a BMW X4 particulate filter?
Diesel engines and direct-injection petrol engines produce soot particles. The particulate filter (DPF/GPF) traps these harmful particles as exhaust gases pass through its honeycomb structure. It is placed on the exhaust line after the catalytic converter.
How does the BMW X4 particulate filter work?
As soot accumulates, the filter periodically burns off (regenerates) the trapped particles. Active regeneration raises exhaust temperatures to 550–600°C, burning soot to ash. This occurs every 300–500 km during normal motorway driving. Vehicles driven only on short urban trips may not regenerate properly, leading to blockage.
When should you change the BMW X4 particulate filter?
The DPF is designed to last 150,000–250,000 km but depends on driving patterns. Signs of needed replacement: DPF warning light, engine in limp mode, excessive exhaust smoke, or diagnostic scan showing excessive back-pressure or failed regeneration cycles.
Can the BMW X4 particulate filter be cleaned instead of replaced?
Yes, professional DPF cleaning can restore a blocked filter at a fraction of replacement cost. However, if the filter substrate is cracked, melted, or structurally damaged, replacement is the only option. Never use a DPF removal/delete service — it is illegal and will fail the MOT/emissions test.
Is it difficult to change the BMW X4 particulate filter?
Difficulty level 2/5: technically straightforward but physically demanding due to the filter's location and weight. Key steps: raise the vehicle, disconnect pressure sensors, remove exhaust clamps/bolts, lower the old DPF, fit the new one with new gaskets, reconnect sensors, clear fault codes, perform a forced regeneration cycle.
2 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| X4 2014-2018 | 2014-2018 | M40i Petrol (N55B30A), xDrive 20d Diesel (B47D20A), xDrive 20d M Performance Diesel (B47D20A), xDrive 20i Petrol (N20B20A), xDrive 28i Petrol (N20B20A), xDrive 30d Diesel (N57D30A), xDrive 30d Diesel (N57D30A), xDrive 30d M Performance Diesel (N57D30A), xDrive 35d Diesel (N57D30… | Diesel, Petrol |
| X4 2018-2025 | 2018-2025 | M Competition Petrol (S58B30A), M Petrol (S58B30A), M40d Diesel (B57D30B), M40d mHev 48V (MHEV),Diesel (B57D30B+JA1), M40i mHEV 48V (MHEV),Petrol (B58B30B), M40i Petrol (B58B30A), M40i Petrol (B58B30B), xDrive 20d Bi-Turbo Diesel (B47D20B), xDrive 20d Bi-Turbo Diesel (B47D20B), … | 48V (MHEV), Diesel, Petrol |
