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November 6, 2024 Service bulletin

After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087

Lexus technical service bulletin L-TT-0336-24 Rev1 for 2023-2024 Lexus RX, 2019-2024 Lexus ES and 2023-2024 Lexus RX Hybrid and others.

Bulletin number
L-TT-0336-24 Rev1 (L-TT-0336-24 Rev1)
Component
Engine
Summary
After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087 - Lost Communication with ECM/PCM "A" Missing Message. Upon investigation, it is found that the engine ECU has been damage and needs to be replaced. In several cases, the cause of the ECU damage was improper jump starting. Further investigation found that ECU damage may occur if the negative (ground) cable clamps are attached on or around the engine ECU or mounting bracket. To prevent this condition from occurring, it is recommended that the jumper cables be attached as described in the owner’s manual.

Owners of these vehicles have filed 40 complaints in the engine category.

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