Airbag control unit with part number 4848802AD

What is the function of Airbag Control Unit 4848802AD?

The Airbag Control Unit 4848802AD is an original Mopar OEM component that serves as the central control unit for the entire Supplemental Restraint System (SRS) in second-generation Dodge Viper models (1996–2002). It analyzes sensor data and is responsible for precisely deploying airbags and seatbelt pretensioners during a collision.

This unit, also known as the SRS module, is specifically designed to meet the high-performance requirements of the Dodge Viper. It continuously processes information from acceleration and yaw-rate sensors to reliably detect a crash.

An important note for workshops: this control unit is replaced by the successor part number 4848802AE. The newer version is fully compatible and supersedes earlier variants such as 4848802AB and 4848802AC.

Why does Control Unit 4848802AD fail?

The most common cause of failure for Control Unit 4848802AD is the storage of crash data after an accident, which locks the system. Other typical failure sources include internal electronic malfunctions, damage caused by moisture or overvoltage, and disrupted communication with diagnostic tools—often indicating hardware issues.

Following a collision, irreversible crash data is stored in the unit’s internal memory. This safety mechanism locks the module, preventing further use until the data is professionally erased.

Internal electronic faults are another widespread issue. These may manifest as error codes such as 65535 (control unit defective), 93F9, or B1000. Often, specific components on the circuit board—manufactured by suppliers like Bosch or Delphi—are affected.

Environmental factors, such as moisture ingress, can lead to corrosion and short circuits on the circuit board. Similarly, voltage surges in the vehicle’s electrical system—such as those caused by jump-starts—can damage sensitive electronic components within the control unit.

How do you recognize a defect in 4848802AD?

A defective Airbag Control Unit 4848802AD primarily shows up as a permanently illuminated or flashing SRS warning light on the instrument cluster. Communication between the control unit and a diagnostic tool often breaks down as well, complicating troubleshooting and pointing to a severe internal fault.

The airbag warning light (SRS light) is the clearest indicator. After starting the engine, it remains steadily lit or begins blinking after about 30 seconds, signaling that the restraint system is not functioning.

Another clear symptom is when a workshop cannot establish communication with the airbag control unit using a diagnostic tool. This is frequently accompanied by error codes such as 65535 (control unit defective), suggesting a complete failure of the internal electronics.

As a result of the defect, airbags and seatbelt pretensioners are disabled. This poses a significant safety risk, so the vehicle should be inspected immediately at a specialized workshop. Driving with an active SRS warning light is strongly discouraged.

In which vehicles is 4848802AD installed?

The Airbag Control Unit with part number 4848802AD was developed specifically for the second generation of the Dodge Viper (model years 1996–2002). At Airbag24, we repair this module for all variants of this series, including high-performance models like the GTS and ACR equipped with the 8.0L V10 engine.

Compatibility extends to several specific Dodge Viper models, including:

Dodge Viper SR II (1996–2002)

Dodge Viper GTS VX I and Dodge Viper GTS ZB I

Dodge Viper ACR VX II and Dodge Viper ACR ZB II

Dodge Viper VX II

It’s important to note that both the original part number 4848802AD and its successors, such as 4848802AE, are found in these vehicles.

How is 4848802AD professionally repaired?

Professional repair of 4848802AD at Airbag24 follows a systematic process. Following an initial inspection to analyze the fault, stored crash data is erased, and any defective electronic components on the circuit board are replaced. Finally, a 100% functional test ensures full safety, backed by 2 years' statutory liability for defects.

First, the removed control unit is sent to Airbag24 for analysis. Using specialized diagnostic equipment, the exact source of the problem—whether in the internal memory or on the hardware level—is pinpointed.

The core of the repair involves addressing the root cause of the failure. This includes resetting crash data after an accident or replacing faulty microchips, processors, or other components on the circuit board.

After repair, the control unit undergoes a comprehensive final inspection, during which all functions are simulated and tested. No new vehicle coding is required after reinstallation, saving both time and costs.