Common Problems Encountered with BMW 750il
Being one of the models in BMW's 7-series line, the BMW 750il features top-notch technology and design. In fact, this series is considered to be the flagship of the BMW lineup, which will steer the company's direction in the future. Because of the model's innovative and protective features, more buyers are opting for this automobile. However, car owners should be wary of these common problems in order to prepare themselves when they encounter such defects.
One of the most common problems encountered by the luxury BMW 750il and BMW models in general involve locking of the steering wheel. This defect is primarily attributed to flimsy ignition key cylinders that wear at a faster rate than other cars' cylinders. This line of BMW models have been known to have frequent failures in the car's shift lever, which manifests in the temporary locking of the steering wheel. When left unresolved, these steering issues result to an inoperable BMW 750il. BMW manufacturers suggest the use of spray lubricants to allow the key cylinder to move more smoothly.
Blown head gasket problems
The BMW make of car models is known in the automotive industry for its crafty engineering. Despite this fact, the BMW 750il cars and most BMW models often encounter a failure in their head gaskets. The malfunctioning gaskets are often attributed to delicate and poorly constructed radiators, water pumps, and thermostats. When these defective parts overheat, the head gaskets are deformed and as a consequence, cause a failure in sealing. BMW recommends car owners to replace the water pump for every 60,000 miles of travel. In addition, changing the radiators at least once for 100,000 miles helps prevent blown head gasket problems for the BMW 750il.
Because most modern BMW vehicles use an electrical locking system, common door lock problems are attributed to the car's fuse box. BMW 750il owners commonly experience defects in electrical locking. In fact, a review once called the vehicle an
electrical nightmare. The errors are often attributed to the car's computer, which is the central lock module that communicates with the BMW's locks.
Yet another electrical problem, the 2001 BMW 750il's cooling system has defective fan motors that cause electrical overload and eventually causing the fans to malfunction. In fact, around 80,000 units were affected as the BMW issued a recall.
Easy Tips on Maintaining your BMW 750iL’s Performance
Although it only has a small following, the BMW 750iL is, just like every BMW vehicle, a great-looking car and seems to have subtly transitioned into better designs as the years went by. But because production has stopped for this model in 2001, you must take good care of this car in order to keep it working for a good many years or at least resell it at an above-average value.
- Check the ignition parts regularly.
Part of tuning up your BMW 750iL is to inspect the ignition parts. This is a key maintenance duty that can save you from many headaches in the long run. Removing and checking the spark plugs will tell you a lot about how well your car's engine is running and what may be causing problems. Every 30,000 miles, replace this component in order to prevent it from seizing in the block. Next, inspect the plastic components like the distributor cap and rotor since they deteriorate over time. Cracks may develop, which allow moisture to seep inside, leading the metal contacts on both parts to corrode and cause your engine to misfire. Lastly, make sure you replace the spark plug wire sets with OEM or better, and test them for proper resistance first before installing them.
- Replace the filters on schedule.
The longevity of your BMW 750iL is directly related to changing the filters on a regular basis. The oil filter removes soot, rust particles, and other solid contaminants from the oil that can damage the engine, and must be replaced every 3,000 miles or 3 months. If you want to improve your vehicle's mileage by 10%, check the air filter. This component serves as an engine's protection device against grit and grime that passes through the air intake. You must replace it every 15,000 miles or once a year. The PCV breather filter, fuel filter, and automatic transmission filter need to be replaced on their own schedule as well.
- Look after essential components.
While every component of your BMW 750iL is important, some have become essential that you need to keep them intact especially when you have to take it for an emissions test. The oxygen sensor monitors the level of oxygen in the exhaust so that an onboard computer can regulate the air/fuel mixture to reduce emissions. However, as it ages, contaminants from normal combustion and oil accumulate on the component, slowing it down. To prevent the oxygen sensor from breaking down and causing more expensive problems, replace it every 60,000 miles. Another essential items to inspect are the vacuum hoses. They are usually made of rubber and can deteriorate as they age. Checking for cracked, frayed, or damaged vacuum hose prevents it from losing compression in the engine and cause it to not run properly. Meanwhile, the coolant temperature sensor measures the temperature that the coolant is giving off, regulating the temperature of the engine. Neglecting it can cause a lot of problems for the engine, so visually inspecting it on a regular basis ensures that it is always in good condition.