Airbag control unit with part number 4896058AD

What is the function of Airbag Control Unit 4896058AD?

The airbag control unit with part number 4896058AD is the central control module of the passive safety system (SRS) in the third-generation Dodge Grand Caravan (model years 1996–2000). It processes data from crash sensors and determines whether and when to deploy the airbags and seatbelt pretensioners.

As a specialized ECU, this unit continuously monitors all relevant system components. In the event of a collision exceeding predefined thresholds, it sends ignition signals to the corresponding airbag modules and seatbelt pretensioners to provide optimal occupant protection.

At the same time, it performs self-diagnosis of the system. Any fault—whether in sensors, wiring, or the control unit itself—is detected and indicated by the illumination of the airbag warning light on the instrument panel.

Why does control unit 4896058AD fail?

The most common cause of failure for control unit 4896058AD is stored crash data following an accident. Additional defects arise from internal electronic malfunctions, often triggered by voltage surges or faulty wiring, as well as communication issues within the CAN bus system.

After an airbag deployment, the unit permanently stores crash data. This lockout feature is mandated by the manufacturer to prevent reuse, necessitating repair by a specialist who can selectively erase this data.

Internal hardware failures are another frequent source of problems. Error codes such as 65535 (control unit defective) or 93F9 (internal error) indicate damaged components on the circuit board, such as faulty chips or capacitors. Causes may include electrical fluctuations, moisture ingress, or aging-related wear.

Communication problems, often signaled by error codes like B1000 or general CAN errors, can also occur. In these cases, the control unit no longer responds to diagnostic equipment requests, potentially due to broken wiring, defective connectors, or an internal malfunction of the communication processor.

How do you recognize a defect in 4896058AD?

A defective airbag control unit 4896058AD primarily manifests as a constantly illuminated or flashing airbag warning light (SRS indicator). Another clear sign is the lack of communication with the control unit during workshop diagnostics, preventing access to the fault memory.

The most noticeable symptom is the active SRS warning light on the dashboard, indicating a fault in the restraint system and signaling that airbags will not deploy in the event of a crash. Prompt visit to a qualified workshop is therefore essential.

In the workshop, the defect often becomes apparent when diagnostic tools cannot establish a connection to the airbag control unit. The unit remains unresponsive, making detailed fault analysis via the OBD port impossible.

Occasionally, specific error codes such as 65535, 93F9, or B1000 may also be logged in other vehicle control units, pointing to a communication issue with the airbag system.

In which vehicles is 4896058AD installed?

The airbag control unit with part number 4896058AD is specifically designed for the third-generation Dodge Grand Caravan. Repairing this model falls within Airbag24’s core expertise and is offered for the corresponding model years.

At Airbag24, we repair the 4896058AD control unit for the following model:

Dodge Grand Caravan (3rd generation, model years 1996–2000)

How does the repair of 4896058AD proceed at Airbag24?

Repair at Airbag24 begins with the submission of the removed control unit. Our technicians perform a precise electronic analysis, address the root cause of the defect—such as erasing crash data or replacing faulty components—and conclude the process with a functional test.

Upon receipt of the unit at Airbag24, a systematic component-level diagnosis is carried out. Stored faults, including crash data or internal defects, are identified and resolved through targeted interventions. This includes professional memory reset procedures or replacement of damaged electronic parts.

A key advantage of our repair service is preserving the original vehicle coding. After installation, the unit can typically be put back into operation without extensive reprogramming or recalibration (plug-and-play), saving both time and costs compared to purchasing a new part.

We provide a 12-month warranty on every repaired unit, underscoring the quality and durability of our work.

What shipping options are available at Airbag24?

You can either bring your control unit to Airbag24 yourself at no cost or send it in. Alternatively, we offer convenient UPS pickup from a location of your choice. For the return shipment, you have free UPS standard shipping as well as express and cash-on-delivery options.

For the outbound shipment, you have two choices: you can either ship the package to us yourself or drop it off in person. Alternatively, you can arrange for UPS to pick it up from a location and on a date of your choosing.

When returning the repaired control unit, we provide flexible solutions. UPS standard shipping is free of charge. If you need it faster, UPS express shipping is available, along with both options including cash-on-delivery. Personal pickup at our premises is also possible.