The dark downside of some modern vehicle features that you should know about

Justin S
Created by: May 20, 2026 | Modified by: May 20, 2026

Modern vehicles are jam-packed with advanced electronic features designed to improve convenience, styling, and automation. We are in an era where even-entry level models can come equipped with electronic door handles, push-button shifters and electronic parking brakes. It appears that most car manufacturers have endorsed the new trend of replacing the mechanical with digital controls, making them increasingly common across the industry.

While many of these technologies offer some benefits, what is not often talked about is the serious concerns that revolve around their safety, reliability and repair cost. As automakers continue replacing simple mechanical systems with electronic alternatives, some drivers and regulators are beginning to question whether every feature truly needs to be electrified. Consumers and lawmakers alike have voiced some concerns over the performance of these features in emergency situations.

Convenience Comes at a Serious Cost

Many modern electronic features are marketed as improvements over traditional mechanical designs; however, what automakers are essentially doing is replacing age-old cable-driven mechanical systems like door handles, parking brakes, gear selectors and steering with electronic units that have no physical connection to the systems they are meant to control. Instead, they use switches, actuators and motors to simulate that mechanical connection. Essentially the driver does not have direct control over the vehicle’s controls and features; instead, the driver’s commands are carried over to actuators and electric motors via electric cables. In many cases the electronic controls are not even connected to the features they are meant to control; instead, they are connected to one of many modules/computers, which governs those functions. Essentially the driver’s input gets submitted to a computer, which then creates a command that is sent to the specific solenoid, actuator or motor, which carries out the desired function. These systems are commonly referred to as fly-by-wire controls and stem from the aerospace industry.

These systems can improve aesthetics, reduce clutter, and add convenience. They also create additional points of failure that older mechanical systems simply did not have. One can argue that stemming from the aerospace industry, these systems and controls should be just as reliable as systems used on passenger planes, which safely carry millions of passengers across the sky every day. However, that argument may be a bit disingenuous, as vehicle fly-by-wire controls are missing two major components that modern vehicles do not support:

• Built in redundancies

Without redundant systems kicking in when one fails, a car fly-by-wire system can never be as reliable as one that is installed on an airplane.

• Strictly scheduled, frequent Inspections

Airplane inspections and operating hours are mandated by strict aviation regulations to help ensure safety, reliability, and proper maintenance throughout the aircraft’s service life. Vehicle inspections, on the other hand are dependent on the vehicle’s owner and how likely they are to bring the vehicle for service to perform all the recommended maintenance, software updates and inspections at manufacturer-recommended intervals.

Electronic Door Handles: A Growing Concern

There are certain electrified car features that have gotten more scrutiny than others. Electronic or retractable door handles are one of them and as they become popular on newer vehicles, some consumers have started raising some serious concerns over their reliability, function and safety. These electronic door handles rely on electronic motors, sensors, software controls and power from the vehicle’s battery instead of using a traditional mechanical linkage, adding additional complexity to the systems and more points of potential failure. 

The Problem

If the battery is damaged or power is lost after an accident, these handles may fail to operate normally. In several high-profile incidents, concerns were raised about occupants and first responders struggling to open electronically controlled doors after crashes or vehicle fires.

As a result, some governments and safety regulators have begun reviewing standards related to emergency door release systems and mechanical backup requirements. In fact, China banned the use of electronic car door handles entirely, citing the fact they are not reliable and prone to failure in emergency situations.

Electronic Parking Brakes

Electronic parking brakes replace the traditional hand lever or foot pedal with a small switch or button. Car manufacturers are quick to point out the benefits such as cleaner interior design and seamless integration with driver assistance systems. However, electronic parking brakes have some serious downsides.

Just like all of the other electronic features, the electronic parking brake may stop functioning after an electrical failure and can be difficult to disengage. Since we are adding more complexity and more systems regulating the parking brake function, it can be more expensive to repair or service than the conventional mechanical systems.

If you are a DIYer and are accustomed to changing your own brakes, replacing rear brakes on a vehicle equipped with an electronic parking brake can be very challenging. It often requires advanced scan tools, software licensing, gateway module cables and additional service procedures in order to put the electric system into service mode, allowing you to change the worn components. The worst part is if you skip any of these steps and try to replace the brakes without letting the car’s computer know that the brake system is being serviced, you risk causing catastrophic damage to major components and creating a serious safety risk.

Overcomplication of Simple Systems

Many critics argue that some modern electronic systems solve problems that didn’t really exist. It is innovation for the sake of innovation.

For example:

• Mechanical door handles worked reliably for decades.
• Traditional parking brakes rarely failed due to software issues.
• Physical buttons could often be operated without looking away from the road.

Replacing these systems with electronic alternatives can often increase the following:

• Complexity
• Repair costs
• Dependence on software and sensors
• Safety Concerns and Regulatory Attention

Governments and safety agencies around the world are beginning to pay closer attention to certain electronic vehicle features and are starting to enact new laws that require car makers to add redundancies and even ban some electronic features entirely.

Common concerns include:

• Emergency access for first responders after crashes
• Driver distraction due to systems relying on touch screen controls and complex interiors
• Electronic failures preventing operation of critical systems

Higher Repair Costs Related to Electronic System Failures

Electronic system failures often take more time to diagnose and require specialized tools and training. Needless to say, these types of repairs are often significantly more expensive to repair than traditional mechanical components.

A single electronic system fault has the potential to interrupt and cause errors in multiple systems, causing a domino effect of error codes and failures. So, by replacing simple cable, lever and latch systems with complicated electronics, we now have to rely on software updates, diagnostics, module programming and sensors. One of the biggest drawbacks is the fact that some of the service and repairs on these new systems can only be conducted by the dealer, eliminating the owner’s choice of where the vehicle can be repaired.

The Takeaway

New technology is not all bad; many electronic features genuinely improve safety and convenience. Innovations such as backup cameras, stability control systems, torque vectoring and advanced all-wheel drive systems have increased safety while keeping the driver firmly in control. The problem arises when automakers introduce innovations that create more drawbacks than real benefits, not considering if the end user will truly benefit from a certain system being fully digitized or electronically controlled.

Modern automotive technology has brought incredible advancements, but it has also introduced new risks and complications. Consumers and lawmakers alike are realizing that not every mechanical system necessarily needs to be replaced with a more complex electronic alternative. While auto manufacturers struggle to maintain a balance between innovation, convenience, safety and reliability, lawmakers will continue to review and create new legislation regulating electrification and automation of traditionally mechanical systems.