KNOWN FAULTS · BMW

BMW Serie 5 (E60/E61) 520d (N47, desde 2007) common problems.

2003–2010 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Stretched rear timing chainValve timing

Engine / equipment: N47 2.0 diesel (116d–123d, 316d–325d, 520d, X1/X3 18d-20d)
Period mentioned: 2007–2015 (improved from 2011)
Symptoms: Rattling from the rear of the engine (gearbox side) on a cold start, getting worse over time. In extreme cases the engine cuts out while driving.
Possible cause described: The timing chain sits at the rear of the engine; its guides are poorly lubricated and the chain stretches. If it jumps or snaps, the valves hit the pistons and the engine is destroyed.
Check for the garage: Listen with the engine fully cold, ideally with a mechanic's stethoscope on the rear of the block.
Cost cited in the source: Approx. €2,000–4,000 at an independent garage (engine must come out)A rough figure from the original database, not an up-to-date quote.

Applies if: Only if fitted with the automatic gearbox described in the record.

ZF 6HP mechatronic sleeve leak and harsh shiftsAutomatic gearbox

Engine / equipment: ZF 6-speed automatic 6HP19/21/26/28 (E53, E60/E61, E63/E64, E65/E66, E85, E90–E93)
Period mentioned: Approx. 2001–2013
Symptoms: Oil drips or dampness by the electrical connector on the side of the pan, a bump on the downshift just before stopping, harsh or flared shifts (especially 3rd-4th and 4th-5th under throttle) and a limp mode that clears after restarting.
Possible cause described: The sealing sleeve between the mechatronic unit and the wiring harness has O-rings that harden and let oil out. A BMW bulletin says to replace it only for a real leak, not mere dampness, and warns that fitting it wrongly damages the connector pins and forces a mechatronic replacement. With low fluid the gearbox loses pressure. Harsh shifts can also come from worn solenoids or valve body, not only the sleeve.
Check for the garage: At a garage: read the gearbox codes, check the fluid level with the official procedure (correct temperature and engine running) and look for a real leak at the sleeve and pan gasket. After a fluid or parts change, the garage should reset adaptations. If limp mode persists, check solenoids and valve body before replacing the gearbox.
Cost cited in the source: Sleeve and pan gasket: minor repair. If fluid is lost and the gearbox is damaged, in a US forum case BMW offered a remanufactured gearbox for about $2,800 without fitting.A rough figure from the original database, not an up-to-date quote.