On certain vehicles, corrosion within the exhaust channel of the intake manifold may occur and lead to leakage of exhaust gas. This situation could result in possible damage to the fuel return line and heat damage to the insulation at the front wall and under specific circumstances a possible risk of fire causing property damage and personal injury.
On certain motorcycles, a blockage of an oil passage in the engine might restrict oil flow to the cylinder head. This situation could result in the engine loosing power and eventually stopping. Loss of propulsion, in conjunction with traffic and road conditions, and the rider's reactions, could increase the risk of a crash causing property damage and/or personal injury.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the engine for blocked passages, damage to the camshaft and cylinder head, and replace parts as required.
On certain vehicles the accelerator pedal movement may become rough, slow to return, or stick in a depressed position. This problem is caused by either wear or high humidity and could result in a loss of control leading to a vehicle crash causing property damage, personal injury or death.
Safety Risk
No risk description available.
Remedy
Dealers will install a steel reinforcement bar to the accelerator pedal assembly. With this reinforcement in place, the excess friction that can cause the pedal to stick is eliminated.
On certain motorcycles, an oil leak from the engine could drip or spray onto the rear tire, creating a risk of a crash which may result in property damage, personal injuries or death.
Safety Risk
No risk description available.
Remedy
Dealers will inspect and, if necessary, repair the crankcase using epoxy.
On certain vehicles, the engine cooling fan may stop working due to a software programming error in the Fan Control Module (FCM). Depending on conditions, the driver may experience reduced air conditioning performance and/or rapid increase in engine coolant temperature. This could result in a loss of cooling system function and engine break down. The driver may not have sufficient time to react to the warning light(s) or the text message in the instrument panel, increasing the risk of a crash causing personal injury or death.
On certain vehicles, the intake air ducts, which are connected to the intermediate resonator in the air intake system of the engine, may separate from the resonator with engine movement. This separation occurs due to the premature ageing of the material used in the intake air ducts which causes excessive shrinking. If the air duct pulls off the resonator, the airflow meter will not accurately measure the intake airflow rate, which could result in unstable idling, poor acceleration, or engine stalling. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will replace the intake air duct with an updated version.
On certain vehicles equipped with a 3.8L naturally aspirated engine, degradation of the front rocker cover gasket may result in eventual oil seepage. Under hard braking, drops of engine oil may be deposited on the exhaust manifold. If the manifold is hot enough and the oil runs below the heat shield, it may ignite into a small flame and, in some instances, the fire may spread to the plastic spark plug wire channel and beyond. An under-hood fire could result in property damage, personal injury or death.
Safety Risk
No risk description available.
Remedy
Dealers will remove the spark plug wire retention channel at the front of the engine and install two new-revised spark plug wire retainers.
On certain vehicles equipped with a 2.5L turbo engine, the oil supply pipe to the turbocharger may crack at the stay brazing on the cylinder head-side. If the pipe cracks it will allow oil to leak and if the leaking oil contacts components operating at high temperatures, an engine compartment fire could occur.
Safety Risk
No risk description available.
Remedy
Dealers will replace the cracked pipe with a modified unit or if no crack is found an additional bracket will be installed to increase the rigidity of the pipe.
On certain vehicles, a metal clip which is part of the Induction Control Valve (ICV) in the engines intake manifold may sever off. If this occurs, abnormal engine noise and vibrations may occur, along with impaired engine functioning and loss of vehicle power. The problem may illuminate the "Check Engine" light on the dashboard. However, the problem may exist, and engine damage may occur, with or without "Check Engine" light illumination. Engine damage could result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will replace the ICV with an updated version.
On certain Passat and Passat wagon, the Engine Control Module (ECM) contains software that may not properly control engine speed with the air conditioning turned on. The ECM may briefly increase engine RPM and vehicle speed. A vehicle surge caused by an unexpected increase in engine RPM may surprise the vehicle operator and can result in a crash causing property damage, personal injury or death.
Safety Risk
No risk description available.
Remedy
Dealers will inspect and, if necessary, update the ECM software.
On certain vehicles equipped with a 4.7L engine, the Powertrain Control Module (PCM) contains software that may allow the engine to stall under certain operating conditions. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Certain vehicles may have been inadvertently assembled with incorrect engine mount bolts. The longer bolts do not provide adequate clamping force to the bracket. In the worst case, the aluminium bracket for the engine mount will break, allowing the engine to contact the sub frame, ultimately resulting in reduced engine torque or stalling. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the engine mount bolts for specific markings and, if required, replace the bracket and bolts.
On certain motorcycles, the engine crankcase vent hole in the air cleaner case could be blocked by material left during the molding process. This could allow air pressure to build-up in the engine and cause the cylinder head cover gasket to be pushed out of place. Oil leakage from the engine during operation could drip or spray onto the rear tire, creating the risk of a crash, possibly causing personal injury or death.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the air cleaner case and, if necessary, remove the obstruction.
On certain Grand Prix GTP and Regal GS vehicles equipped with a 3.8L supercharged engine, degradation of the front rocker cover gasket may result in eventual oil seepage. Under hard braking, drops of engine oil may be deposited on the exhaust manifold. If the manifold is hot enough and the oil runs below the heat shield, it may ignite into a small flame and, in some instances, the fire may spread to the plastic spark plug wire channel and beyond. An under-hood fire could result in property damage, personal injury or death.
Safety Risk
No risk description available.
Remedy
Dealers will install an updated front rocker cover gasket.
On certain vehicles, the front control module may have been manufactured incorrectly. This could cause the engine to stall while driving, or not to start, and/or cause the windshield wipers to become inoperative. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the front control module and replace it if necessary.
On certain vehicles equipped with a 3.0L diesel engine, the crankshaft sensor may fail, causing the engine to stall. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
On certain diesel powered E320, GL320, ML320 and R320 vehicles, the crankshaft sensor may fail, causing the engine to stall. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
On certain vehicles equipped with a 7.3L diesel engine, the camshaft position sensor may fail, causing the engine to stall. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will inspect and, if required, replace the camshaft position sensor.
On certain vehicles equipped with a 2.5L engine, the crank angle sensor can malfunction causing the engine to stall. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
Safety Risk
No risk description available.
Remedy
Dealers will reprogram the Electronic Control Module (ECM) to prevent stalling.
On certain vehicles equipped with a 2.2L engine, the timing chain may fail. If a timing chain link separates while the engine is running, the engine will stall and not restart. Engine stalling would result in lost propulsion which, in conjunction with traffic and road conditions, and the driver's reactions, could increase the risk of a crash.
