BMW 5 Series E60 520d N47 2.0d 177bhp — N47 Rear Timing Chain Failure
The E60 5 Series with the N47 diesel engine carries the same catastrophic rear-mounted timing chain risk as the E90 3 Series. Engine removal is required for repair — making this one of the most expensive known faults in the BMW range.
Severity
CriticalDIY Difficulty
Professional Only
Est. Cost
£2500–£4000
OBD Codes
P0016P0017Timing Chain
Typical layout and location for the Timing Chain assembly.
Symptoms
- Rattling from rear of engine on cold start
- Noise fades as oil pressure builds but returns when cold
- P0016/P0017 timing codes
- In failure: sudden engine cut-out, catastrophic damage
Root Cause
BMW placed the N47 timing chain at the rear of the engine. The chain, guides and tensioner all wear — but because access requires engine removal, the job is far more expensive than a front-mounted chain.
How To Fix
- Listen for the rattle — it comes from behind the engine, not the front
- Stop driving immediately if rattle is heard
- Engine removal required for chain replacement
- Cost: £2,500-4,000 at a BMW specialist
- Always ask: 'has the timing chain been replaced?' before buying any N47 E60
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £1000–£1600 |
| Independent Garage | £2500–£4000 |
| Main Dealership | £4000–£6400 |
Other Faults on This Variant
Swirl Flap Failure and Engine Ingestion
CriticalThe N47 in the E60 5 Series shares the swirl flap failure risk of all N47-engined BMWs. The flap breaks off the corroded actuator rod and is ingested into the engine.
EGR Failure and Coolant Loss
ModerateEGR cooler failure on the E60 520d N47 causes internal coolant leaks into the intake manifold. Combined with EGR valve carbonising, both components typically need replacing together.
Turbocharger Failure
SevereTurbo failure on the E60 520d N47 is common from 100,000 miles. The 5 Series tends to be driven harder than the 3 Series, increasing turbo stress.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.