BMW 745li Problems for New Owners
Since 1977, BMW has been producing the 7 Series, its line of full-sized luxury vehicles that have been the German automobile manufacturer's flagship cars. In 2002, it introduced the 745li to its line-up. Before it was replaced with the 750li in 2006, this car introduced the company's innovations like the first six-speed automatic transmission and the iDrive control system. However, it wasn't a perfect vehicle. Here are some of the common problems that people have encountered with BMW 745li parts and accessories:
The iDrive system
The iDrive is BMW's computer system that allows the driver to control various components inside the vehicle. It has a screen in the dashboard and a mouse-like controller on the center console. However, it was also the first thing that a new BMW 7 Series driver had to familiarize himself with. The early iDrive versions weren't quite user-friendly, especially for overwhelmed first-timers. Described as "clusters of clutter," the hidden submenus distract and detract from the overall driving experience.
The dashboard and the driving experience
Fiddling around and becoming familiar with the iDrive system's controls aren't the only thing that new 745li owners had to do while driving the car. They also needed to read the instruction manual quite extensively because a lot of warning lights and electronic glitches have popped up. These electrical issues dashboard messages that ranged from warnings like "avoid high cornering speeds" and "avoid hard braking" to serious issues like "brake/drive failure" and "dynamic drive inactive." The experience was so varied that drivers either had to ignore the messages or call their dealers to ask for some roadside assistance.
The exterior styling
Despite being redesigned for the new generation, the BMW 7 Series cars (including the 745li) received mixed reviews about their new looks. Because they were two inches taller and more than an inch longer and wider than their predecessors, the 7 Series cars looked heavier and it seemed as if their proportions were all wrong. The rear half of the model-variants, in particular, might have a larger trunk, but it doesn't impress with its L-shaped tail lights. But, no matter how long it took for them to get used to the new lines, 745li drivers appreciated BMW's attention to aerodynamics.
I have a BMW 745Li and this car used to run very smooth even under high speed—highway driving. However, lately this car drives like it's a cheap car. If I drive it even just over 45mph, you can feel the mushy and shaking when steering over bumps. It also has a semi-truck stopping noise. Can someone please explain to me what is happening?
Your car is made of various components that work together in order for it to run. The system responsible for giving you a smooth ride and great handle is the suspension system. When one or two parts in the system fails, you will have a very bumpy and uncomfortable ride. Now, one of the most common culprits of a mushy road feel or shuddering in the steering are the tension strut bushiness or the front thrust rod bushings. These are rubber mounts and known to weaken and crack over time because of everyday wear and tear. It is recommended to replace the bushings to eliminate the problem. You can get polyurethane or polygraphite bushings as replacements—they will last longer than ordinary rubber ones.
I bought this 745Li because I thought it's a pretty nice ride. And hey, it's BMW! All their cars should be great, right? So imagine my frustration when after just a few months of driving it, I noticed that various interior trim parts are starting to feel all on their own. The center consoles, the storage tray buttons, door sill entry covers, kick panels, and the b-pillar trims—all are peeling. Please give me tips on how to restore them; they are not nice to look at.
Peeling dash and various interior trims are actually common issues with BMW cars. It really is annoying especially if you've only had the car for a few months—not even getting high mileage on it. We found out that the reason for this is that most dashes and trims are sprayed with water-based dyes and most cleaners are solvent-based. The two don't mix well, obviously. The solution, therefore, is to look for a cleaner that doesn't have solvent in it. Also, use only mild detergent as this can also cause the plastic trims in the interior to peel off. Now, for those trims and dash that have already peeled, you can restore these with some sandpaper and automotive primer. Just sand off the peeling plastic and then spray it with primer—it will look like new in no time.
So, I recently took my BMW 745Li to the emission testing center to get my emission test. I was confident that everything will be fine because I know there was no problem with it. Imagine my dismay when the test was done and I was told that my car failed the test. I don't know what's up. Can you tell me what's going on?
Most states nowadays are using Onboard Diagnostics (OBDII) plug-in check instead of a tailpipe emission test to check for a car's emission compliance. The possible causes for failing a test include problems with one of these: eleven monitors, catalyst monitors, misfire, evaporative system, EGR system, fuel system, heated catalyst, secondary air system, O2 sensor and heater, and A/C system refrigerant. If you fail an OBDII system check, you can get a tailpipe test to check if you are having problem only with the OBDII. If your car also failed the tailpipe test but the Check Engine Light is not turning on; you might be dealing with a burned out MIL lamp or faulty catalytic converter. The converter is an afterburner that cleans up the exhaust after it exits the engine. The OBDII system should be able to detect a drop in the converter's efficiency. You might also want to check the engine for misfires, overly rich or lean fuel condition, or if your car is having a loss of compression. These are all causes for failed emission test.