tail light issue

[bram.vir]

hey guys
new issue whit my X
my tail lights work fine
but when i push the brakes only the left one get ¨more bright¨ the right one stay whit the same intesity.

what its the problem?

 

[bobflood]

hey guys
new issue whit my X
my tail lights work fine
but when i push the brakes only the left one get ¨more bright¨ the right one stay whit the same intesity.

what its the problem?

The "brake" filament in the bulb has burned out. Those are 1157/3157 bulbs and have two filaments in the same glass envelope. Just replace the bulb.