Buzzing or clicking noise from the SCR transfer pump.
BMW technical service bulletin B160316 for 2014-2016 BMW 535D and 2014 BMW 525d Xdrive.
- Bulletin number
- B160316
- Component
- Engine and engine cooling
- Summary
- BUZZING OR CLICKING NOISE FROM THE SCR TRANSFER PUMP. There is a buzzing or clicking noise coming from under the car that can be heard from the passenger compartment when the engine is at idle. Normal operation of the SCR transfer pump delivering diesel exhaust fluid (DEF) from the passive to active tank.
Owners of these vehicles have filed 36 complaints in the engine category.
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