Wiring issues most common fault in ERP 2.0 units ahead of 2027 transition: LTA

VICOM similarly said the number of vehicles inspected for OBU-related issues at its centres has not been significant.

Most cases were isolated and one-off, it said, with no recurring issues observed. The most common fault it sees is a loss of power, which can occur for various reasons.

VICOM said diagnosis and rectification can typically be completed within a single visit.

LTA said some motorists have also experienced unresponsive displays at car parks or gantries, which may be due to hardware malfunctions.

For car parks with electronic parking systems, feedback about gantry detection problems has fallen significantly from 2025 and now averages about two cases a month, according to the authority.

In some instances, a motorist may have difficulty entering a car park because the OBU antenna is not within range of the car park antenna. LTA said this could be resolved by repositioning the vehicle or recalibrating the affected antenna.