2004 Acura TSX electrical system problems

29 owner complaints filed with NHTSA name the electrical system on the 2004 Acura TSX — 20% of all complaints for this model year.

Electrical System complaints

20%

share of all complaints

104,750 mi

median reported incident mileage

0 / 1

crash / fire reports

What owners report

“While driving the vehicle, the vehicle suddenly shutoff and powered on again. After do some diagnostics we determined is was the ECU/ECM. The ECM has corrosion on the top which caused salty water to eat through the lid. Doing some research this vehicle make and model has recall but doesn’t show up…”
filed Apr 21, 2026
“The contact owns a 2004 Acura TSX. The contact stated while driving at various speeds, the vehicle made an abnormal clicking sound that was coming from the instrument cluster. The contact stated that upon decelerating to come to a stop, the vehicle stalled. The contact stated that while the vehicle…”
filed Apr 18, 2025

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Tech line summary article - When adding keys or running the System Check with the Immobilizer Setup Tool in the i-HDS, are you seeing this message? "Immobilizer system is not normal". We?re aware of this issue and have…
BTS180402 · Service Bulletin/Repair Instructions · issued Apr 17, 2018
"service bulletin - the rear wire harness near the left side trunk hinge is not adequately protected and could be damaged when the trunk is repeatedly opened and closed. A damaged wire harness can cause a blown fuse or…
B04-026 · Service Bulletin/Repair Instructions · issued Dec 6, 2016