Airbag control unit with part number 5WK4 797

What is the function of Airbag Control Unit 5WK4 797?

The part number 5WK4 797 refers to an airbag control unit (SRS ECU) manufactured by Continental, specifically designed for the Daewoo Tico KL (1991–2001). Its primary role is to monitor the entire restraint system and deploy the airbags in the event of a crash.

As the central control unit of the passive safety system, the 5WK4 797 continuously processes data from various sensors throughout the vehicle. In the event of a collision, it determines within milliseconds whether and which restraint systems, such as the front airbags, need to be activated.

Manufactured by Continental, a leading OEM partner in the automotive industry, this control unit is precisely tailored to the electronic architecture and safety requirements of the Daewoo Tico KL. A professional repair restores its original manufacturer‑specific functionality.

What defects occur with 5WK4 797?

Typical defects of the 5WK4 797 control unit include internal electronic faults that cause the SRS warning light to remain constantly illuminated. Common causes are defective components or faulty solder joints on the circuit board. Another major issue is the storage of crash data after an accident, which locks the unit.

A frequent failure reason is internal hardware malfunctions. This can involve damaged circuit boards, switches, or broken solder joints. Such errors result in the control unit logging an internal fault in its memory and activating the airbag warning light to alert the driver.

Following an accident—even minor collisions—the control unit stores so‑called crash data. This data retention serves as a safety measure, permanently locking the unit to force a full system check. Further use is only possible after professionally resetting this data.

Although the fault often originates within the control unit itself, careful diagnosis on the vehicle is essential. Issues like broken wiring, incorrect connections, or loose plug‑in connectors to the airbags or seatbelt pretensioners can produce similar symptoms and must be ruled out before removing the control unit.

How do you recognize a defect in 5WK4 797?

The most obvious sign of a defect in the 5WK4 797 control unit is the persistently illuminated airbag warning light (SRS light) in the instrument cluster. This indicates a malfunction in the safety system, resulting in its complete deactivation. Reading the fault memory often reveals an internal control unit error.

The continuously lit SRS warning light is the primary symptom. It does not extinguish after starting the vehicle, signaling that the airbag system is not operational. This poses a significant safety risk, as no protection from the restraint systems would be available in the event of a crash.

Using a suitable workshop diagnostic tool, the fault memory can be read. Typical entries directly point to a defect in the control unit, often described as an “internal error” or “control unit defective.” This clearly indicates the need for repair or replacement.

In which models is 5WK4 797 installed?

The airbag control unit with part number 5WK4 797 is specifically designed for vehicles of the Daewoo brand. It is exclusively used in the Tico KL model series, produced between 1991 and 2001. For this particular model, repair represents the most cost‑effective solution.

At Airbag24, we repair the 5WK4 797 control unit for the following specific vehicle model:

Daewoo Tico KL (model years 1991–2001)

Due to the specialized nature of this component, repair is an effective way to restore the full functionality of the original airbag system in this vehicle model without resorting to expensive new parts or unreliable used components.

How does the repair process work at Airbag24?

The repair process at Airbag24 is designed for efficiency and safety. After submitting your removed 5WK4 797 control unit, our technicians perform a thorough analysis, fix the electronic fault, and reset any stored crash data if necessary. The unit is then tested and returned with a 12‑month warranty.

First, a qualified workshop should clearly identify the fault as originating in the airbag control unit. Following proper removal, please send the unit securely packaged to us. By repairing the original part, we ensure there will be no compatibility issues or the need for time‑consuming reprogramming of the vehicle’s system.

At Airbag24, the refurbishment follows a proven procedure: After an initial inspection, defective internal components such as circuit boards or solder joints are replaced. If crash data has been stored, it is professionally and completely erased. This process fully restores the control unit’s functionality.

Finally, each repaired control unit undergoes a comprehensive functional and quality inspection. We provide a 12-month warranty on every repair performed. Once reinstalled, the refurbished control unit is ready for immediate use.

What shipping options are available?

For a hassle-free process, you can send your defective control unit to Airbag24 at no cost or arrange a convenient UPS pickup. For returns, we offer free standard UPS shipping. Additionally, express and cash-on-delivery options are available to meet your specific needs.

For sending your item to us, you have two choices: you can ship it at your own expense, or take advantage of our convenient UPS pickup service, which collects the package from a location of your choice.

For returning the repaired control unit, you can choose from the following options:

Free standard UPS shipping (delivery in 1–3 business days), UPS express shipping (delivery in 1–2 business days), standard UPS shipping with cash on delivery, or UPS express shipping with cash on delivery. Alternatively, you may also opt for self-collection at our premises.