Replaced passenger mirror glass, now getting blind spot and cross traffic errors

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aek3

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My passenger side mirror got shattered, the blind spot and cross traffic monitor worked with the shattered mirror. When i replaced and put the new mirror on i started getting the blind spot not available and cross traffic errors popping up. Nothing else has happened, nothing wrong all i did was replace the broken glass. any ideas why?
 

Rover Range

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Double check the electrical connector for the blind spot light in the mirror.
 

aek3

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yes its an after market mirror not OEM. once you changed to an OEM Richord errors went away?
 

richord

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The blind spot monitor tests the mirror LED's I think by sensing the current or resistance. If it senses an incorrect measure, the blind spot monitor module will not work correctly. Many things are also measured by modules (ECU's) such as the cameras but you can still use after market cameras. The blind spot monitor sensor, located behind the rear bumper is also coded with the VIN number of the car and if it is on the right or left side of the vehicle. I had to replace the sensor since it went bad and my mirror glass because it did not display the warning. I had to reprogram the blind spot monitor module for it to work with a used replacement module.
 

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