Airbag control unit with part number TARME2937R0152

What is the function of the airbag control unit TARME2937R0152?

The airbag control unit TARME2937R0152 is the central control module for the occupant restraint system (SRS) in various Mitsubishi Lancer models. Its primary task is to process sensor data to precisely and rapidly activate life-saving restraint systems such as airbags and seatbelt pretensioners in the event of a crash.

As the “brain” of the safety system, this unit continuously communicates with the vehicle’s distributed crash sensors—acceleration and angular velocity sensors—analyzing their signals to determine the severity and type of impact. Based on this analysis, the internal microcontroller decides which airbags (driver, passenger, knee airbag, etc.) and seatbelt pretensioners need to be deployed to provide optimal protection for occupants.

In addition, the control unit performs a self‑test of the entire SRS every time the vehicle is started. If faults are detected in the sensors, the airbag ignition circuits, or within the control unit itself, the airbag warning light (SRS lamp) illuminates on the instrument cluster to alert the driver.

Why does the airbag control unit TARME2937R0152 fail?

The most common cause of failure or malfunction in the TARME2937R0152 control unit is stored crash data following an accident. Other defects often stem from internal electronic components such as voltage regulators, capacitors, or the CAN‑bus transceiver, which can disrupt or prevent proper operation.

After a crash in which restraint systems have been activated, the control unit permanently writes so‑called crash data into its internal memory (EEPROM/Flash). This data record locks the control unit, preventing reactivation of the system—even if all external components (airbags, seatbelt pretensioners) have been replaced. The SRS warning light remains illuminated.

Another frequent source of failure is hardware damage on the circuit board. This may include faulty voltage regulators that no longer supply the microcontroller correctly, or defective capacitors leading to instability. Additionally, the CAN transceiver responsible for communication with the rest of the vehicle can fail, making diagnostics impossible.

Rarely, overvoltage damage caused by issues in the vehicle’s electrical system—such as a faulty alternator or jump-starting with incorrect polarity—can also harm the sensitive electronics of the airbag control unit, resulting in an internal fault.

How do you recognize a defect in the TARME2937R0152 control unit?

A defective airbag control unit TARME2937R0152 typically manifests as a persistently lit or flickering SRS airbag warning light on the dashboard. Furthermore, the control unit may become unresponsive when connected to a diagnostic tool, or it may display an internal, non‑erasable error code.

The primary and most obvious symptom is the active SRS warning light. It indicates a fault in the restraint system and fails to extinguish after engine start-up as expected. This is a safety‑critical issue that will result in refusal of the vehicle inspection sticker during the main technical inspection.

Another clear sign is when a professional workshop cannot establish communication with the airbag control unit using a diagnostic device. The unit becomes unreachable on the vehicle’s network, suggesting a severe internal hardware failure.

Specific error codes are often stored in the fault memory, directly pointing to a defect within the control unit itself. Typical errors include “Internal Control Unit Error” or “Control Unit Defective.” These errors generally cannot be cleared.

Even after a minor accident where airbags did not deploy, crash data may still be stored. For safety reasons, the system remains locked, again indicated by the persistently illuminated SRS lamp.

In which vehicles is the TARME2937R0152 control unit installed?

The airbag control unit with part number TARME2937R0152 is used across various model series and generations of the Mitsubishi Lancer. Airbag24 offers repairs covering a wide range of these models, from older series to newer generations.

At Airbag24, expert repair services for this control unit are available for the following Mitsubishi models:

Mitsubishi Lancer CC, Mitsubishi Lancer CD, Mitsubishi Lancer CE, Mitsubishi Lancer CG, Mitsubishi Lancer CL, Mitsubishi Lancer CN, Mitsubishi Lancer CY (model years 2007–2017), as well as the Mitsubishi Lancer Evolution VIII.

Since control units are often platform‑based, ensuring compatibility through the exact vehicle model and part number is crucial. Repairing the original unit remains the safest approach to avoid compatibility issues.

How does the repair of the TARME2937R0152 control unit proceed?

Professional repair at Airbag24 begins with an incoming inspection, during which communication and the fault memory are read out. The core process involves erasing crash data and repairing electronic components, followed by a final test. We provide a 12-month warranty on every repair.

Once the removed control unit has arrived at Airbag24, it undergoes a detailed analysis. Technicians connect the device to a specialized test bench to reproduce the faults described by the customer and read out the fault memory.

The key step for units with crash data is erasing this information. For this, special hardware is used to directly access the memory chip (EEPROM/Flash) on the circuit board. Crash‑related data blocks are selectively erased or restored to factory settings without altering the vehicle‑specific configuration.

If additional hardware defects such as faulty voltage regulators or defective CAN‑bus drivers are detected during the incoming inspection, these electronic components are professionally replaced. Cold solder joints are also reworked when necessary to ensure long‑term functionality.

This is followed by a comprehensive functional test under simulated vehicle conditions. The test verifies that the control unit initializes correctly, communicates properly, and drives all outputs as intended. Only after a successful test is the unit approved for return shipment.

Is repairing the TARME2937R0152 worthwhile?

Yes, repair is highly cost‑effective. Compared to an expensive new part from the manufacturer—often over €700—the restoration performed by a specialist is significantly cheaper. Additionally, you avoid the time‑consuming search for a suitable, often uncertain, used replacement.

The biggest advantage is substantial cost savings. Repair costs amount to only a fraction of the price of a new original spare part. This makes refurbishment especially attractive for older vehicles, where the cost of a new part could exceed the vehicle’s value.

Another crucial benefit is that the original, vehicle‑specific control unit remains intact. As a result, after installation, complicated coding or programming procedures are usually unnecessary—unlike when installing a foreign used or new part. The repaired unit is typically plug‑and‑play ready.

Repair is also a sustainable solution. Rather than discarding a complex electronic component, it is expertly refurbished. This conserves valuable resources and prevents electronic waste.

What shipping options does Airbag24 offer?

Airbag24 provides flexible and secure shipping options. You can send your control unit yourself free of charge or arrange a convenient UPS pickup. For return shipments, we offer free standard UPS shipping, expedited express delivery, and cash‑on‑delivery payment options.

For outbound shipping, you can either send the package yourself at no cost to you or drop it off in person. Alternatively, you can book a UPS pickup from your preferred location through our portal.

Following successful repair, return shipping is provided free of charge via standard UPS (1–3 business days). If faster delivery is required, you can opt for UPS Express (1–2 business days). Both options are also available combined with cash‑on‑delivery payment. Of course, personal collection at our premises is also possible.