Why Airbag Non-Deployment Means Design Failure

Person at the wheel driving
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Your crash was violent, the impact was jarring, and the damage to your vehicle is obvious, but the airbags stayed silent. You can still picture the crushed front end or twisted side panels and the empty steering wheel, with no deployed bag between you and the hard interior of the car. That disconnect between what you lived through and what the safety system did is often where the hardest questions begin.

Maybe an insurance adjuster has already suggested the impact was not “quite hard enough” for the airbags to go off. Maybe a dealership or body shop brushed off your concerns with a quick, technical-sounding answer. At the same time, you are dealing with real injuries, medical visits around Springfield or Joplin, and the worry that this crash changed your life in ways it never should have. You know something about that situation is not right, but you may not know how to prove it.

At Bishop & Hayes P.C., we focus only on auto accident cases across Missouri, Oklahoma, Kansas, and Arkansas, and we routinely work with investigators and accident reconstruction professionals to examine vehicles, download event data recorders, and understand what really happened inside a car at the moment of a crash. Over nearly 50 years of combined experience, we have seen many serious collisions where airbags that should have fired did not, and we have learned that this is rarely just bad luck. In the sections that follow, we will walk through how airbag systems are supposed to work, why non-deployment in a hard crash is a major red flag, and how that failure can create a potential airbag failure injury claim.

Not sure if airbag failure indicates a design defect? An experienced attorney can evaluate your case. Call (417) 304-3228 or contact Bishop & Hayes P.C. today.

Why Airbag Non-Deployment Is a Red Flag in Serious Crashes

In certain types of serious, but survivable, collisions, airbags are designed to deploy to reduce the force of impact on the body. When they do not activate under those conditions, it can signal a potential problem.

  • Expected deployment in severe impacts: High‑force crashes such as head‑on collisions, offset impacts, or major side impacts are the types of events where airbags are designed to deploy
  • Purpose of the airbag system: Airbags are meant to inflate within milliseconds to protect the head, face, chest, and neck before the body fully contacts interior surfaces
  • Consequences of non‑deployment: When airbags fail to deploy in a severe crash, the body may continue moving unprotected into the steering wheel, dashboard, or side structures, often reflected in the pattern of injuries
  • Difference from low‑severity crashes: Minor collisions, glancing impacts, or low‑speed incidents may not meet deployment thresholds, and in those situations non‑deployment can be expected
  • Indicator of a potential defect or failure: In crashes involving major vehicle damage, structural collapse, or emergency extrication, lack of deployment can be a technical warning sign that warrants further evaluation

When the severity of the collision appears consistent with airbag activation but no deployment occurs, it may suggest an issue with the system design, components, or maintenance history.

How Modern Airbag Systems Decide to Deploy

Airbag systems rely on a network of sensors and control modules that continuously monitor vehicle motion to determine whether deployment is necessary:

  • Airbag control module (SRS module): Acts as the system’s “brain,” receiving data from crash sensors and accelerometers positioned throughout the vehicle
  • Sensors and accelerometers: Detect sudden changes in speed and direction during a collision and convert that motion into electrical signals
  • Signal processing and threshold analysis: The control module compares incoming data to programmed crash patterns, evaluating impact force, duration, and direction within milliseconds
  • Deployment command and inflation: When thresholds are met, the system triggers inflators that rapidly generate gas to fill the airbags before the body impacts interior structures
  • Power and backup systems: The system draws from the vehicle’s power supply and often includes backup power to ensure deployment even if the battery is damaged
  • Event data recorder and diagnostics: The module records crash data and system performance, while also running self-checks that can trigger warning lights if problems are detected

Common Reasons Airbags Stay Silent in a Hard Impact

When airbags fail to deploy in a serious crash, the issue often traces back to a breakdown in the system’s sensing, communication, or decision-making process. Common reasons include:

  • Defective or miscalibrated sensors: Crash sensors that are manufactured out of specification, damaged, or poorly positioned may fail to detect the impact accurately, preventing the system from recognizing the collision
  • Wiring and connector failures: Corroded connectors, pinched or damaged wires, or improper repairs can interrupt communication between sensors, the control module, and the inflator
  • Software and threshold issues: Deployment decisions depend on programmed rules, and if thresholds are set too high or fail to reflect real-world crash patterns, the system may misclassify a serious collision
  • Improper repairs after prior damage: Reused parts, skipped recalibration steps, or incorrect installation following previous repairs can leave the system unable to function properly in a later crash
  • Use of non-approved or counterfeit parts: Substituting unauthorized components can interfere with system performance and increase the risk of non-deployment

These failures can prevent a properly functioning system from deploying when needed, creating a gap between expected safety performance and the actual outcome in a collision.

Why Driver Error and “Crash Was Too Minor” Are Often Just Excuses

After an airbag failure injury, the first explanations people hear are often aimed at shutting down questions. You might be told the impact angle was unusual, that the speed was not high enough, or that the airbags are designed to deploy only in very specific situations and yours fell outside that window. These phrases sound technical, but they often rest on assumptions rather than on the actual data from your crash and your vehicle’s systems.

Modern vehicles store a great deal of information in their event data recorders. These devices can show how fast you were traveling, how quickly your speed dropped, whether brakes were applied, and sometimes what the airbag control module “saw” in terms of impact forces. When we, alongside our reconstruction partners, obtain and analyze that data, we can often tell whether the crash matched the kind of event the airbag system was supposedly designed to handle. In many serious collisions around Springfield and throughout our region, the numbers show a severe impact even when an insurer tries to label it as “low-speed.”

At Bishop & Hayes P.C., we have experience on both sides of these conversations, including prior work in insurance defense. We know the standard scripts used to blame drivers or characterize serious crashes as too minor or “not quite right” for deployment. That background helps us anticipate and challenge those excuses with data instead of opinions. By grounding our arguments in the vehicle’s own records, the physical damage, and your documented injuries, we help shift the focus away from vague notions of driver error and toward the real, systemic failures behind the non-deployment.

Who May Be Legally Responsible for an Airbag Failure Injury

When an airbag fails to deploy in a serious crash, responsibility may extend beyond the at‑fault driver to other parties involved in the design, manufacture, sale, and repair of the vehicle and its safety systems:

  • Vehicle manufacturers: Responsible for overall airbag system design, including sensor placement, control module programming, component selection, and testing; liability may arise if the design fails to deploy in real‑world crashes
  • Component manufacturers: Companies that produce sensors, inflators, or modules may be liable if defects in manufacturing or quality control lead to system failure
  • Dealerships and body shops: May be responsible for improper repairs, failure to follow manufacturer procedures, incorrect installation, or lack of necessary recalibration after prior collisions
  • Sellers of used vehicles: Potential liability when selling vehicles with known airbag issues, prior deployment, undisclosed defects, or incomplete repairs
  • Repair and parts providers: Liability may arise when non‑approved or counterfeit components are installed, affecting system performance

Identifying all responsible parties helps ensure that a claim reflects both the original collision and any additional harm caused by the failure of the vehicle’s safety systems.

Critical Evidence to Preserve After an Airbag Does Not Deploy

Preserving evidence early is one of the most important steps in an airbag failure case, especially because vehicles and data can be altered or lost quickly:

  • The vehicle itself: Keeping the car intact allows inspection of the airbag control module, sensors, wiring, inflators, and interior components to identify defects, loose connections, or improper repairs
  • Airbag module and event data: Downloading information from the event data recorder and airbag system can capture key details such as speed change, impact timing, and whether a deployment signal was issued
  • Photographic documentation: Images of the vehicle exterior, interior, undeployed airbags, and the crash scene help show the severity of the impact and the absence of airbag deployment
  • Scene and crash evidence: Photos of skid marks, impact points, and surrounding conditions assist in understanding crash dynamics
  • Medical records: Documentation from local hospitals and providers connects injury patterns to the severity of the crash and lack of airbag protection

These pieces of evidence form the foundation of an airbag failure claim and help establish what went wrong before critical information is lost.

How We Investigate Airbag Failure Cases for Clients

When you contact us after a serious crash where the airbags did not deploy, our first steps focus on understanding both the collision and the safety system’s behavior. We review crash reports from law enforcement, look closely at photographs of the scene and vehicle, and talk with you about anything unusual you noticed before the crash, such as airbag or SRS warning lights on the dash. These early details help us decide what kinds of technical professionals we need to involve.

Next, we move to secure the vehicle and arrange for a thorough inspection. Working with accident reconstruction professionals, we coordinate downloading the event data recorder and airbag control module, examining the sensor locations, and tracing the wiring and connectors that carry signals. The team looks for physical signs of prior repairs, improperly installed parts, corrosion, or damage that could explain why the system stayed silent. This is not a surface-level glance. It is a component-by-component investigation.

We then compare what we learn from the vehicle and data to what a reasonably safe airbag design should have done in the same crash. If the recorded change in speed and impact duration clearly fall within common deployment ranges, but there is no record of a deployment command, that points toward a system failure. If we see mismatched or counterfeit parts, missing sensors, or skipped calibration steps, that points toward negligent repair. Throughout this process, we also work with medical professionals to connect the nature and severity of your injuries to the lack of airbag protection.

Because partners at Bishop & Hayes P.C. personally handle every case from start to finish, the same attorneys you talk to at the beginning help shape the investigation strategy and review the technical findings. We draw on nearly five decades of combined auto accident experience, including insight from earlier work in insurance defense, to anticipate how manufacturers and insurers may respond to airbag failure allegations. When they resist taking responsibility, we are prepared to use the evidence we have gathered to press your claim in negotiation and, when appropriate, in court.

Find Out What Really Happened in Your Airbag Failure Crash

If you or someone you love suffered an airbag failure injury in a crash around Springfield, Joplin, Miami, or anywhere in Missouri, Oklahoma, Kansas, or Arkansas, we can help you start getting those answers. Our team at Bishop & Hayes P.C. focuses on auto accidents, works closely with investigators and reconstruction professionals, and takes proactive steps to secure vehicles and data before they are lost. We approach these cases with compassion for what you have endured and a clear, technical strategy for holding the right parties accountable.

Call (417) 304-3228 to talk with us about your airbag non-deployment crash and the options you may have.

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