Some Acura TSX owners report experiencing automatic restart issues while driving, where the car unexpectedly shuts off and then restarts on its own. These incidents may be linked to intermittent electrical power loss, which can manifest as a brief moment of all electric power going off while the engine continues to run. Additionally, some drivers have noted random shut-offs occurring without warning, even at high speeds, likely due to underlying electrical circuit problems. It is advisable for owners to check for stored trouble codes, as these can provide insights into the systems causing the shutdowns. Potential causes of these issues include bad wiring, faulty coil packs, loose connections, or a malfunctioning Powertrain Control Module (PCM). To diagnose the problem, conducting a voltage test can be a valuable first step in identifying wiring or component issues. Other electrical malfunctions, such as a weak battery or failing alternator, may also contribute to these automatic restart problems. Addressing these circuit malfunctions promptly is essential for ensuring safe driving conditions in the Acura TSX.

The 2004-2014 Acura TSX engine oil pressure sensor is known to leak from normal operation. More information about the oil pressure sensor here. To correct the leak, the sensor must be inspected, properly sealed and installed, or replaced with new.