Lada Priora 2170 airbag control unit repair

What is a Lada Priora 2170 airbag control unit?

In the Lada Priora 2170, the airbag control unit is the central control unit of the restraint system (SRS). It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners deploy. It tells you about faults in the system via the airbag warning light.

The Lada Priora 2170 (2007 to 2015) is fitted with such an SRS control unit. It is never idle: as soon as the ignition is switched on, it checks its own functions and the connected components, and the warning light only goes out once everything is in order.

If an accident occurs, the unit stores the crash data and locks itself. For the restraint system to work reliably again afterwards, the control unit has to be repaired.

Why is the Lada Priora 2170 airbag control unit defective?

Most often the cause is crash data from an earlier accident, which is stored even if no airbag deployed and which an ordinary diagnostic tool cannot remove. Other possible causes are aged electronic components, cold solder joints, moisture with corrosion on the connectors, and voltage spikes.

Voltage spikes can occur when the battery is weak or when a jump start is given or received. Over the years, components on the circuit board also wear out, and frequent temperature fluctuations make solder joints brittle. If moisture reaches the connectors, corrosion builds up on the contacts, and the unit then reports faults in the system.

It is suspicious if the airbag warning light stays on continuously, the fault memory cannot be reset or the diagnostic tool cannot establish a connection at all. In this case, having the unit checked makes sense.

Common error codes for Lada Priora 2170 airbag control unit repair

Which error codes are stored in the Lada Priora 2170 is determined by the manufacturer; they are read out with a diagnostic tool. They point to the affected area, such as communication, internal faults of the control unit, a squib circuit or stored crash data.

Which messages your vehicle actually outputs depends on its equipment and the diagnostic tool. So read out the fault memory and send the log in with the control unit. This makes targeted troubleshooting easier at Airbag24.

Please note: a single code does not prove that the control unit is defective. The cause may equally be connectors, wiring or an airbag module. Only testing the unit you send in shows where the fault lies.

What part numbers are available for the Lada Priora 2170 airbag control unit repair?

On the label of the airbag control unit you will find the part number, which defines the exact version. Depending on equipment and year of manufacture, different numbers occur within one model series.

The following numbers are known so far; the list makes no claim to completeness.

• 2170-3824010
• 610957700D

Hold the number on your unit next to this list. A match only shows that you have the right unit in front of you. Whether it is defective only emerges from reading out the fault memory or from testing at Airbag24.

The route to repair is short: first, have the fault memory read out. Then disconnect the battery and remove the control unit. Next, create a repair order online, and finally send the unit in. Checking, repairing and testing usually take 3–4 working days at Airbag24; afterwards your own unit is sent back to you.

The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.