Chrysler B129A: Driver Blind Spot Sensor-Incompatible Version

Is your scanner showing Chrysler B129A?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chrysler B129A: Driver Blind Spot Sensor-Incompatible Version

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$150-$500
Can I Still Drive?
:
Yes

What Does The Chrysler B129A Code Mean?

With the ignition on. Vehicle speed greater than 6 mph (9.6 km/h). This fault will present itself during a reflashing session. When the flashing tool attempts to enter the programming session, the Blind Spot Module (BSM) will query the sensors for their bootloader version.

If the returned version is not compatible with the BSM bootloader, the BSM will not allow the system to flash. This DTC will be set

What Are The Potential Causes Of The Chrysler B129A Code?

LEFT REAR BLIND SPOT SENSOR

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Mopar Chrysler 300 Dodge Jeep Grand Cherokee Blind Spot Detection Sensor OEM

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chrysler B129A, DTCDECODE.

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