Airbag control unit with part number 04602340AG

What is the Airbag Control Unit 4602340AG?

The Airbag Control Unit 4602340AG is the central control module for the Supplemental Restraint System (SRS) in various Chrysler Sebring models. It continuously monitors signals from impact sensors and seatbelt pretensioners to precisely deploy airbags in the event of a crash and securely store relevant crash data in its internal memory.

Technically, this SRS ECU (Supplemental Restraint System – Electronic Control Unit) serves as the brain of the passive safety system. It receives data from acceleration sensors that detect a collision and swiftly sends ignition signals to the airbag gas generators and pyrotechnic seatbelt pretensioners.

After deployment, the unit permanently stores accident-related data—known as crash data—in its internal EEPROM/Flash memory. This storage triggers a systemic lockout that cannot be resolved by simply clearing the fault memory; professional repair is required.

Why Does the Airbag Control Unit 4602340AG Fail?

The most common cause of failure for the 4602340AG control unit is the retention of crash data after an accident, which intentionally locks out the system. Other typical causes include hardware defects such as damaged components on the circuit board due to overvoltage, water damage, corrosion, or faulty solder joints.

Following a collision, the control unit becomes locked—even if not all airbags deployed. This lockout is a safety feature designed to prevent re-use of a potentially damaged unit without professional inspection and reset of the crash data.

Electronic faults on the circuit board are also a frequent issue. Voltage spikes in the vehicle’s electrical system, moisture ingress leading to corrosion, or age‑related material fatigue at solder joints can create internal malfunctions that disrupt communication with the unit.

Physical impacts, such as a severe blow to the housing or damaged connectors, can likewise impair functionality. These often result in persistent error codes like “control unit defective,” commonly appearing across manufacturers as error 65535 or 93F9 in diagnostic logs.

How Do You Recognize a Defect in the 4602340AG Control Unit?

A defect in the Airbag Control Unit 4602340AG primarily manifests as a constantly illuminated airbag warning light on the instrument cluster. Often, communication with the control unit via a diagnostic tool becomes impossible, or permanent, non‑erasable error codes such as “control unit defective” are stored.

The persistently lit airbag warning light is the clearest indicator. It signals a critical fault in the restraint system, potentially preventing proper deployment of airbags and seatbelt pretensioners during an actual crash.

Another clear symptom occurs when a workshop’s diagnostic equipment can no longer access the airbag control unit. The ECU fails to respond to requests through the OBD interface, hindering accurate in‑vehicle fault analysis.

In some cases, communication may still be possible, but permanent internal errors remain stored. These cannot be cleared and directly point to hardware defects or stored, blocking crash data.

In Which Vehicles Is the 4602340AG Control Unit Installed?

The Airbag Control Unit with part number 4602340AG is specifically installed in various model series and variants of the Chrysler Sebring, including different generations as well as convertible and SRT versions. For these specific models, repair represents a proven alternative to costly new parts.

At Airbag24, we offer expert repair of the 4602340AG control unit for the following Chrysler models:

Chrysler Sebring 3rd Gen

Chrysler Sebring JR (2000–2007)

Chrysler Sebring JS (2006–2010)

Chrysler Sebring Convertible JR (2000–2007)

Chrysler Sebring SRT FJ

Since multiple compatible OEM part numbers may exist, verifying the part number stamped on the control unit before submission is crucial to ensure compatibility.

How Is the 4602340AG Control Unit Professionally Repaired?

At Airbag24, professional repair of the 4602340AG control unit follows a standardized process. It begins with an initial inspection, followed by electronic hardware repair, deletion of crash data, and a final functional test. All repairs come with 2 years' statutory liability for defects.

Before removal, it is ideal to generate and attach a diagnostic report from the vehicle. Depending on the model, the control unit is typically located in the center console. Prior to any work, disconnecting the vehicle battery is essential.

After being sent to Airbag24, the unit undergoes a detailed fault analysis. Technicians inspect the circuit board for visible damage, measure voltages and CAN communication signals, and pinpoint the exact cause of the malfunction.

The actual repair process, depending on the findings, may involve erasing crash data stored in the EEPROM (reset), replacing defective SMD components, or reworking solder joints on the circuit board. If necessary, the unit is recalibrated to ensure proper communication within the vehicle.

Finally, the control unit is tested on a specialized test bench to verify its correct operation. After reinstalling it in the vehicle, the system’s fault memory must be cleared to complete the repair process.