BMW 645 reliability

Undetected EGR System leaks may cause thermal activity in the intake manifold.

Fix: The engine management control unit (DDE) will be programmed with improved software incorporating the latest OBD functionality.

Recalled models: 6 SERIES GT · 322,745 vehicles

The Exhaust Gas Recirculation cooler may leak over time and cause thermal incident.

Fix: On the affected vehicles the EGR cooler module will be replaced.

Recalled models: 6 SERIES GRAN COUPE · 319,399 vehicles

The Exhaust Gas Recirculation (EGR) Module could leak over time�and cause thermal incident.

Fix: The EGR cooler will be internally inspected with an endoscope and replaced if evidence of leaking is found.

Recalled models: 6 SERIES CONVERTIBLE · 18,330 vehicles

The engine counterbalance shaft bearing bushing into the crankcase may be out of specification

Fix: Replace the engine of affected vehicles

Recalled models: 6 SERIES · 53 vehicles

The branch-off point of the main battery cable may corrode

Fix: The branch-off point will be checked and reworked appropriately depending on the level of corrosion present

Recalled models: 6 SERIES · 121,849 vehicles

The auxiliary water pump may short circuit causing a thermal incident.

Fix: The Auxiliary Water Pump of the affected vehicles will be replaced.

Recalled models: 6 SERIES · 5,866 vehicles

The EGR cooler may leakpresenting a fire risk

Fix: A visual inspection of the EGR cooler to check for leaks and excessive build-up of deposits. The EGR cooler will be replaced on all affected vehicles

Recalled models: 6 SERIES · 225,449 vehicles

The affected vehicles may be equipped with a crankshaft sensor with a software fault.

Fix: On the affected vehicles the crankshaft sensor will be replaced with a new version.

Recalled models: 6 SERIES · 1,642 vehicles

The affected vehicles may be equipped with a crankshaft sensor with a software fault. The crankshaft sensor cannot process the signal values from the crankshaft transmitter due to an improper firmware level. The firmware does not compensate sufficiently the temperature gradients and the magnetic field strength of the sensor electronic. If the crankshaft sensor cannot process the signal values from the transmitter the Digital Diesel Electronic (DDE) will notice that and change to the emergency operation mode. The emergency mode will be displayed by the check control message �engine malfunction�. The driver may notice a rough running engine and a reduced driving power (70%). However an engine stalling during driving conditions cannot be excluded.

Fix: On the affected vehicles the crankshaft sensor will be replaced with a new version.

Recalled models: 6 SERIES · 4,025 vehicles

Due to a fault in the supplier's production process the bolt on the outer side of the seat mechanism on both front seats might not have been fixed properly. In cases where the bolt loosens the customer would be alerted by noise coming from the seat and a noticeable increase in seat clearance/movement. If this is ignored by the customer the securing bolt on the outer side of the seat might come off. If the securing bolt comes off the seat can move backwards in a rear end crash situation.

Fix: The bolt on the seat mechanism will be checked for excessive clearance and if necessary replaced.

Recalled models: 6 SERIES · 50 vehicles

Due to insufficient strength the front universal joint in the rear front universal joint of the rear prop shaft may fail.

Fix: On affected vehicle replace the universal joint with a modified version

Recalled models: 6 SERIES · 10,849 vehicles

The igniter for the certain airbag modules may not have been correctly manufactured which may affect air bag deployment in the event of a collision.

Fix: Where necessary replace affected airbag modules.

Recalled models: 6 SERIES · 668 vehicles

The screws retaining the variable camshaft timing (VANOS) housing may loosen and under certain circumstances the heads may break off. This can lead to the VANOS leaking oil internally and adversely affect the valve timing adjustment. If found to deviating from targeted data the engine emergency mode will be activated. This will be indicated by a distinct change in engine running. The orange engine management warning lamp and a check message; On vehicles with N51/N52 engines this will appear at ignition recycle on N55 engine it will display immediately.

Fix: Repalce bolted connection of the VANOS adjustment unit

Recalled models: 6 SERIES · 2,967 vehicles

In individual cases the oil pump may no longer provide the required oil pressure. This may cause severe engine damage. Additionally the occurrence of critical driving situations cannot be ruled out because the oil pressure may drop suddenly while driving. The driver will usually notice a drop in the engine oil pressure due to the check control message ''Low oil Pressure''. It is also possible the engine block will be damaged and as a result engine oil may be lost.

Fix: The oil pump will be replaced with the correct version.

Recalled models: 6 SERIES · 80 vehicles

The positive battery cable routed from the vehicle battery to the engine bay consists of one cable in the luggage compartment and one cable in the underbody. Both cable are connected by a screw connection and covered by a plastic cover. In single cases the plastic cover may have been fitted incorrectly during the vehicle production. Over time an incorrectly fitted cover could cause the screw connections to come loose leading to an increased resistance also humidity may affect the connection and cause high resistance and drop in current. This can lead to the vehicle not starting and in extreme cases the connection could over heat leading to the possibility of a fire in the luggage area.

Fix: The clips on the battery will be checked the cover replaced and sealed.

Recalled models: 6 SERIES · 128,701 vehicles

Some engines are fitted with an additional water pump for the turbo charger. In some circumstances a crack may develop which then leads to melting of the plug connections and the housing. Further heat development may then lead to scorch damage. In exceptional cases such overheating can lead to smouldering of the water pump. If smouldering occurs an engine compartment fire and vehicle fire cannot be excluded.

Fix: The water pump will be replaced for a new more robust version.

Recalled models: 6 SERIES · 21 vehicles

Due to the ingress of moisture it is possible that a short circuit can occur in the additional coolant pump for the exhaust turbocharger. The driver will be informed of the issue by a warning message on the display in the instrument panel. If not addressed it is possible for further heat build up in the pump which may cause the plug connection and housing to melt and in extreme cases a localised fire in the engine compartment or vehicle.

Fix: Recall all affected vehicles for the replacement of the additional coolant pump.

Recalled models: 6 SERIES · 557 vehicles

The pedestrian safety function in the bonnet may fail to trigger.

Fix: Replace the pedestrian safety sensor system.

Recalled models: 6 SERIES CONVERTIBLE · 520 vehicles

It is possible that engine oil can enter the brake servo via the brake vacuum pump and vacuum hose. If this occurs it could damage the brake servo membrane which may leak so causing a reduction in braking assistance and a requirement to apply increased pedal force to achieve the same braking efficiency.

Fix: Recall all affected vehicles for the fitment of a modified servo hose. In addition the checking of the brake servo for contamination and replacement if required.

Recalled models: 6 SERIES · 10,567 vehicles

It has been identified that defects in a material joint may have resulted during the heat treatment of individual components of the rear axle carrier. This may result in failure of the holders of the links and struts even under normal driving conditions. Should the holder of a link fail whilst the vehicle is in motion the handling characteristics of the vehicle would undergo an unexpected change which could result in an accident.

Fix: Recalled vehicles will be checked and if necessary fitted with a quality assured rear axle carrier.

Recalled models: 6 SERIES · 665 vehicles

It has been identified that the lower rubber mounting on the metal bush of the rear shock absorbers may fail to meet the quality requirement. Dependant on the mileage and operating conditions the rubber mounting may come completely free from the shock absorber. If this occurs the bodywork would no longer be supported above the wheels causing it to come into contact with the wheel concerned. Should this occur the possibility exists that a critical driving condition might occur or even the risk of an accident.

Fix: Recalled vehicles will have the rear shock absorbers checked and replaced if necessary.

Recalled models: 6 SERIES · 3,743 vehicles

There is a possibility that the tyres on the affected vehicles may have been damaged when they were fitted to the rim. If the tyres have been damaged this may lead to a sudden loss of pressure in the rear tyres.

Fix: Recall the vehicles that are likely to be affected and replace all the tyres

Recalled models: 6 SERIES · 11 vehicles

Due to a hardware fault within the digital engine electronic control unit the possibility exists that the unit could fail completely resulting in loss of engine power.

Fix: Recall likely to be affected vehicles and replace the control unit with a quality assured item.

Recalled models: 6 SERIES · 231 vehicles