Hyundai Genesis 2009–2010 — technical service bulletin
Bulletin SB-09-BE-023 · NHTSA communication 10031927 · issued Sep 1, 2009
Technical service bulletin
communication type
Exterior Lighting
component
2009–2010
model years
2
vehicle entries
Official summary
Hyundai: stop lamp z01 diode inspection procedure. Some vehicles may experience the stop lamps blinking on and off even when the brakes are not applied. If the z01 diode is suspected as the cause of the stop lamp malfunction, the z01 diode must be inspected according to procedures. If there is no trouble with the z01 diode after inspection, carry out other necessary repairs and do not replace the z01 diode. No model years listed. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.