Description
Factory BMW 4 Series Workshop Manual (2014-2020)
This is the official factory-level workshop manual for the BMW 4 Series F32/F33/F36 platform, covering every repair and maintenance procedure US technicians and enthusiasts need – from routine service intervals to complete powertrain overhauls.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L turbo inline-4 (N20, B48) – 420i, 428i, 430i; 3.0L turbo inline-6 (N55, B58) – 435i, 440i |
| Diesel | N/A (US-market scope) |
| Transmissions | 6-speed manual; ZF 8-speed automatic |
| Drive | RWD; xDrive AWD |
| Model Years | 2014, 2015, 2016, 2017, 2018, 2019, 2020 |
| Badge Twins | F32 Coupe, F33 Convertible, F36 Gran Coupe |
Common 4 Series Repairs Covered
| System | Procedures |
|---|---|
| N20 Timing Chain | Timing chain tensioner replacement, chain guide inspection, and cold-start rattle diagnosis |
| Cooling System | Electric water pump replacement, expansion tank repair, thermostat service – known failure points on N20 and N55 engines |
| Brakes & DSC | Brake pad and rotor replacement, DSC module diagnostics, brake fluid flush with torque specs |
| Electrical & iDrive | Full wiring diagrams, connector pinouts, iDrive/NBT unit diagnostics, and battery registration procedure |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the notorious N20 timing chain issue covered in this manual?
Yes. The manual includes complete procedures for inspecting and replacing the N20 timing chain tensioner and guides – a documented failure on 2012-2015 420i and 428i models. Step-by-step instructions, special tool requirements, and torque specifications are all included.
Does this manual cover all three F-series 4 Series body styles?
It covers the F32 two-door Coupe, F33 Convertible (including retractable hardtop mechanisms), and F36 four-door Gran Coupe – all sharing the same underlying platform with body-style-specific procedures where applicable.
Are ZF 8-speed automatic transmission service procedures included?
Yes. The manual details fluid change intervals, mechatronic unit diagnostics, selector lever removal, and full transmission removal and installation procedures for the ZF 8HP unit used across the 4 Series range.
What format is the manual?
The manual is delivered as a fully searchable PDF, compatible with Windows, macOS, Linux, iOS, and Android devices. Pages can be printed individually or in sections for workshop use, and your purchase allows unlimited re-downloads.





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