BMW X6 X6 xDrive30d common faults.

2014–2019, SUV, diesel, 258 HP.

The fault list covers: N57D30L engine, ZF8HP70 transmission.

What you save stays on this device only. My saves

6 fault write-ups. All are important. 23 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

6 important faults

critical3

Diesel high pressure pump: power loss and engine shutdown while driving

critical

The high pressure pump of these common rail diesels (Bosch CP4) can fail while driving. The characteristic course is not gradual: a "Drivetrain fault" message appears on the dash, and within a few seconds the power is gone, on the motorway too. Afterwards the engine often cranks but will not start.

Show the rest

What makes the repair expensive: once the inside of the pump wears, metal debris travels through the rail and contaminates the entire fuel system. At that point replacing the pump is not enough: the injectors, the rails, the tank and the lines go with it. That is the difference between a "pump replacement" and a "full system replacement" quote, that is what you should ask about.

The maker started a recall for this in the United States (NHTSA 21V586000, 2014 to 2018 328d / X5 xDrive35d / 535d / 740Ld / X3 xDrive28d). The same campaign did not run in Europe, even though the same pump works in the 320d/520d/X3 20d versions that are common right across Europe. The recall does not cover these cars.

between 79,000 and 248,000 km

What to check

Ask whether there has ever been a "Drivetrain fault" message or a loss of power while driving
Ask for the service history: if the high pressure pump was replaced, check whether the injectors and the lines were replaced with it. If not, the debris may still be in the system
After a cold start listen to the engine at idle: irregular running or smoke is suspect

3 more steps in the write-up

N47 / N57 diesel: timing chain on the rear of the engine

critical

In these diesels BMW put the timing chain at the back of the engine, on the gearbox side. The chain, the guides and the tensioner wear early. The symptom is a metallic rattle on a cold start that quietens once warm.

Show the rest

The engine or the gearbox has to come out for the replacement, so the labour is a multiple of the parts cost. If the chain breaks or jumps, the engine is badly damaged inside, and the repair is an engine rebuild.

The problem is worst on engines built between March 2007 and March 2011, and the ones before early 2009 are the worst of all. The maker handled it under a service campaign in several European markets, but in the United Kingdom there was no formal recall. "It was never recalled" does not mean the chain is fine.

According to the German technical press the fault affects the whole N47 series and every power output, inspection is advised from 100,000 km, and factory revisions closed the matter around 2013, so cars built after 2013 are in a significantly better position. Stretching is typically preceded by a distinct rattle.

between 100,000 and 200,000 km

What to check

Insist on a cold start: the car should stand overnight, and the seller must not start it before you arrive
At the moment of starting, stand behind the engine (on the gearbox side) and listen to the first 3 to 5 seconds
A metallic rattle from the back of the engine calls for immediate expert inspection: this is not "diesel noise"

2 more steps in the write-up

Diesel EGR cooler: cracking, coolant in the intake, fire risk

critical

The internal fins of the exhaust gas recirculation cooler crack over time, and glycol coolant leaks into the intake, where it mixes with soot. The sticky mixture can ignite at high temperature: it can melt the plastic intake manifold and, in extreme cases, cause an engine bay fire.

Show the rest

The maker recalled the 2013 to 2018 four and six cylinder diesels, roughly 800,000 cars worldwide. The first repair attempt proved insufficient, and the leak returned in several cases: the cooler fitted since 2022, from a different supplier, is the valid fix.

So "the recall was carried out" is not enough on its own: you have to check when, and which repair was done. A first round repair does not by itself rule the problem out.

The early symptoms are white, sweet smelling exhaust smoke, slowly dropping coolant, and a rough idle.

It shows up on diesels built between 2013 and 2018. The earlier M57 is not covered by the recall.

between 108,000 and 222,000 km

What to check

Check the level in the expansion tank, and ask whether it has needed topping up
After a cold start watch the exhaust: persistent white smoke and a sweet smell mean the coolant is burning
Ask for the service book and find the EGR cooler recall entry: Check the date too

2 more steps in the write-up

expensive3

XDrive transfer case (ATC): binding in corners, plastic actuator gear

expensive

The heart of the four wheel drive in the longitudinal engine BMW X models (X3, X5 and the X1 E84) is the ATC transfer case. It has two faults, and you can feel both while driving.

Show the rest

The first is wear of the clutch pack and the fluid: in a slow, tight corner (a car park, a roundabout) the car jerks and "hops", as if the drive grabbed and let go. You can also get a jerk when pulling away on a slope. The second is the plastic actuator gear: the position signal is lost, the brake, ABS and 4x4/DSC lights come on together on the dash, and a clicking is audible from the transfer case when you switch the ignition off.

Workshops often propose a full transfer case replacement straight away. But the plastic gear can be replaced on its own, and the wrong tyre size or a mixed set of tyres also imitates the jerking, because the transfer case then slips continuously. So clear up the tyres and the fault code first, before you pay for a transfer case replacement.

between 72,000 and 175,000 km

What to check

In a slow, tight corner (a car park) watch for jerking, binding and a "skipping" feel
When pulling away on light throttle, can you feel the drivetrain jerk
Watch the dash: 4x4, ABS, DSC and brake lights together point at the actuator

4 more steps in the write-up

ZF 8HP automatic: mechatronics unit and connector sleeve leak

expensive

The ZF eight speed automatic (BMW Steptronic 8HP family) has two faults, and you can feel both.

Show the rest

The first is the mechatronics unit: the valve body and the control electronics in one. If the solenoids or the pressure regulation weaken, the gearbox jerks, the D/R engagement is delayed, it logs a gear ratio fault code, and finally drops into limp mode (often staying in 2nd or 3rd).

The second, and often misdiagnosed, is the connector sleeve of the mechatronics unit: the O-ring of the plastic sleeve ages, and ATF leaks from the side of the housing, exactly where the wiring harness enters. This is easy to mistake for a rear crankshaft seal. The trail starts from the driver's side of the housing, not from the clutch side.

On cars built in 2023 there was also a separate safety recall for a welding fault in the mechatronics unit. That is not the same as the wear related sleeve and the valves.

Check the fluid level, the area around the sleeve and the fault codes first; do not accept a "full gearbox replacement" quote straight away.

above 120,000 km

What to check

On the test drive watch for delayed D/R engagement, a jerk when shifting, and limp mode (a stuck gear)
Look at the driver's side of the gearbox housing where the wiring harness enters: an ATF trail from the sleeve is suspect
Do not confuse it with a rear crankshaft seal leak: the direction of the trail decides

3 more steps in the write-up

Undersized oil pump: lubrication runs out at the main and rod bearings

expensive

The connecting rod and main bearings run out, and the cause is the factory oil pump: it is undersized and does not deliver enough oil volume at idle and at low revs. BMW specifies 1.2 bar of oil pressure at idle at operating temperature, but on engines with mileage it falls below that, and the bearing shell is no longer adequately lubricated with that much. Bearing damage is reported between 130 000 and 200 000 kilometres, but it is always preceded by a longer period with low oil pressure.

Show the rest

The most important thing to know is that the control unit does not signal this: no lamp comes on for low oil pressure, and no fault code is stored either. The symptom is a quiet ticking at idle and a metallic noise under load, and at the rod bearing this is often explained by something else. It can be measured, though: a workshop connects a gauge and reads the real pressure at idle at operating temperature, and below 1.2 bar the engine is running in the period that causes the damage.

The length of the oil change decides matters on this engine. A change between 10 000 and 20 000 kilometres protects the bearing, the long factory interval does not. If the main bearing turns, the crankshaft is damaged too, and the upper half of the main bearing bed is aluminium while the lower is steel, so repairing the crankcase is difficult, and the block often goes out cracked and beyond repair. As prevention an uprated oil pump exists, with larger gears and its own pressure regulator, between 800 and 1150 euros, without fitting.

between 130,000 and 200,000 km

What to check

Have the oil pressure measured with a gauge at operating temperature at idle: below 1.2 bar is dangerous
Do not wait for a lamp or a fault code: the control unit does not signal this fault
Listen to the engine warm: a quiet ticking at idle, a metallic noise under load

3 more steps in the write-up

Official recall23 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 30 March 2023

A12/00868/23Safety recallInjuries30 March 2023 · EU Safety Gate

The airbag may deteriorate over time, and if deployed, excessive internal pressure may cause the inflator body to burst and metal fragments could pass through the cushion material causing injury to occupants. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 30/03/2023

We could not check this: model year. The authority's notice

A12/01929/23Safety recallInjuries29 June 2021 · EU Safety Gate

The propellant in the driver airbag can deteriorate due to high humidity and temperature variations. In the event of an accident in which the airbag deploys, this could result in fragments from the inflator casing coming loose and injuring the vehicle’s occupants. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 29/06/2021

We could not check this: model year. The authority's notice

20V017000AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULEAIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE15 January 2020 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2008-2013 128i and 135i Convertibles, 128i, 135i, and M Coupes, 2007-2010 X3 30si and X3 xDrive30i, 2013-2015 X1 sDrive28i, X1 xDrive28i and X1 xDrive35i, 2007-2013 328i, 328i xDrive, 335i, 335is, 335i xDrive and M3 Coupes, 2006-2011 328i, 328xi, 328i xDrive, 325i, 325xi, 330i, 330xi, 335i, 335xi, 335i xDrive and M3, 2009-2011 335D, 2006-2012 325xi, 328i, 328xi and 328i xDrive, 2010-2011 X6 ActiveHybrid, 2007-2013 328i, 335i, 335is, M3 Coupes, X5 30si, X5 xDrive30i, X5 xDrive35i, X5 48i, X5 xDrive48i, X5 xDrive50i and X5 M, 2009-2013 X5 xDrive35d and 2008-2014 X6 xDrive35i, X6 xDrive50i and X6M vehicles equipped with non-desiccated driver frontal air bag inflators containing phase stabilized ammonium nitrate (PSAN) that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: BMW will notify owners, and dealers will replace the driver air bag. On X5 and X6 vehicles, only the inflator will be replaced. All repairs will be performed free of charge. The recall began March 11, 2020. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

19V823000CHILD SEATCHILD SEAT18 November 2019 · NHTSA (USA)

BMW of North America, LLC. (BMW) is recalling certain 2015-2019 X6 sDrive35i, X6 xDrive35i, X6 xDrive50i, and X6M vehicles equipped with rear seat lower anchor bars used in securing child restraint seats. The lower anchor bars may become damaged over time when used with an ISOFIX-type, rigid-style connector, child restraint system.

Risk: Damaged lower anchor bars may increase the child's risk of injury in the event of a crash.

Remedy: BMW will notify owners, and dealers will weld a reinforcing bracket to the lower anchor bars and the vehicle body, free of charge. Owner notification began January 17, 2020. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

19V017000AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULEAIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE14 January 2019 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2007-2013 X5 xDrive30i, X5 xDrive35i, X5 xDrive48i, X5 xDrive50i and X5 M vehicles, 2008-2014 X6 xDrive35i, X6 xDrive50i and X6 M vehicles, 2009-2013 X5 xDrive35d vehicles and 2010-2011 X6 ActiveHybrid vehicles. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Owners are advised not to drive their vehicles until the remedy is performed. BMW will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 14, 2019. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

18V680000SUSPENSION:REARSUSPENSION:REAR28 September 2018 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2019 BMW X6 sDrive35i, X6 xDrive35i, X6 xDrive50i and X6M vehicles. The rear upper control arm pivot bolts may have been improperly hardened, possibly causing the rear upper control arms to break.

Risk: If a rear upper control arm breaks, it can affect vehicle handling and control, increasing the risk of a crash.

Remedy: All affected vehicles remain on dealer lots, therefore owner letters will not be mailed. BMW dealers will replace both rear upper control arms, free of charge. The recall began September 21, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

18V614000WHEELS:LUGS/NUTS/BOLTS/STUDSWHEELS:LUGS/NUTS/BOLTS/STUDS12 September 2018 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2018-2019 BMW X6 sDrive35i, X6 xDrive35i, X6 xDrive50i, and X6M vehicles. The wheel bolts on these vehicles may not have been properly tightened.

Risk: The improperly tightened wheel bolts may loosen and break, affecting vehicle handling and control and increasing the risk of a crash.

Remedy: BMW will notify owners, and dealers will replace and tighten all of the wheel bolts, free of charge. The recall began November 1, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

18V439000SUSPENSION:FRONT:CONTROL ARM:LOWER ARMSUSPENSION:FRONT:CONTROL ARM:LOWER ARM28 June 2018 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2018 BMW X5 xDrive35i, X5 xDrive50i, X5 xDrive35d, and X6 sDrive35i vehicles. The pivot bolt on the front lower-left control arm may not have been properly hardened, which may cause the control arm to break.

Risk: If the lower control arm breaks, vehicle handling and control can be affected, increasing the risk of a crash.

Remedy: BMW will notify owners, and dealers will inspect the lower-left control arms and replace if necessary, free of charge. The recall began July 11, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

17V727000SUSPENSIONSUSPENSION17 November 2017 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2018 BMW X5 SAV, X5 M SAV, X6 SAV, and X6 M SAV vehicles. Bolts that secure the front suspension may not have been properly tightened.

Risk: Loose bolts can affect the performance of the suspension, thereby increasing the risk of a crash.

Remedy: BMW will notify owners, and dealers will inspect and tighten the wishbone suspension bolts, free of charge. The recall is expected to begin January 8, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

17V327000EQUIPMENT:OTHER:LABELSEQUIPMENT:OTHER:LABELS18 May 2017 · NHTSA (USA)

BMW North America, LLC (BMW) is recalling certain 2017 BMW X5 M and BMW X6 M vehicles. The vehicles are equipped with 21-inch tires, however the Tire Information Label states that the vehicles are equipped with 20-inch tires. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Risk: The incorrect tire size on the label does not comply with FMVSS number 110.

Remedy: BMW has notified the affected owners and is providing them with a corrected tire information placard, free of charge. The recall began June 15, 2017. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

17V138000POWER TRAIN:DRIVELINE:DRIVESHAFTPOWER TRAIN:DRIVELINE:DRIVESHAFT2 March 2017 · NHTSA (USA)

BMW of North America, LLC, (BMW) is recalling certain 2011-2013 X5 xDrive35i, X5 xDrive50i, X5 M and X5 xDrive35d vehicles, 2011-2014 X6 xDrive35i, X6 xDrive50i and X6M vehicles, and 2011 x6 ActiveHybrid Vehicles. Water and debris may enter the front driveshaft's universal joint, causing excessive wear and possibly resulting in the joint's failure.

Risk: If the front universal joint fails, the front wheels would not be driven, affecting vehicle traction. Additionally, continued driving of the vehicle with a broken front universal joint may damage other components. Either condition may increase the risk of a crash.

Remedy: BMW will notify owners, and dealers will replace the front driveshaft, free of charge. The recall began on April 18, 2017. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

A12/00042/20Safety recallInjuriesno date · EU Safety Gate

The four ISOFIX child-seat attachment brackets on the rear seats may not have the necessary structural durability. As a result, one or more of the brackets could break under increased fatigue loading during operation. This may increase the risk of injury in the event of an accident.