U0158Lost Communication With Head Up Display
- Generic OBD-II code · Network
- How the car detects it
- U0158 means the head-up display, which projects speed, navigation arrows or warnings into the windscreen, has stopped answering the module that supervises it, usually the instrument cluster. GM lists it in the Saab 9-5 (2011) U-code table and covers it in bulletin 22-NA-113: on 2020-2022 Cadillac CT4/CT5 with RPO UV6 the cluster stores U0158 when LIN messages arrive at an awkward moment while the HUD enters standby, leaving it blank until reset; the fix is a cluster reflash and pulling the HUD fuse. Stellantis notes for the 2021 Jeep Grand Cherokee WL and the 2024-25 Charger/Wagoneer S that the cluster may log it when leaving transport mode; clearing is enough there. U0459 covers implausible HUD data. No MIL.
- What you may notice
- Head-up display blank or frozen
- Brightness, height or page settings have no effect
- Display returns after an ignition cycle
- Likely causes
- LikelyHUD stuck in standby due to message timing, cured by cluster software (GM CT4/CT5)
- PossibleStored entry from transport/logistics mode on new vehicles (Stellantis)
- PossibleHUD fuse, supply or ground interrupted
- RareLIN/CAN line or connector under the dashboard faulty
- RareHead-up display unit internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.