ERP 2.0 OBU faults before Singapore’s 2027 switch

Singapore will move to ERP 2.0 road-use charging on January 1, 2027, when Singapore-registered motor vehicles will need an on-board unit (OBU) to travel on public roads. Most installations have not required a reported workshop follow-up, but wiring faults and intermittent operation matter to drivers and fleet operators who need the units to work reliably. 121

How common are follow-ups and repeat inspections?

About 1,500 cars, or 0.2% of cars fitted with OBUs, needed workshop follow-ups as of July 2026, according to figures reported from the Land Transport Authority (LTA). That proportion was down from 1.3% in May 2025. These are follow-up figures, not a measure of every possible OBU fault. 12

Some vehicles have reportedly returned to workshops three or four times. The available figures do not show how many cars needed repeat inspections overall, so those cases cannot be used to calculate a fleet-wide repeat-visit rate. 419

What is going wrong?

Wiring is the most common problem requiring a follow-up, LTA says. Different car models have different internal configurations, which can complicate installation; earlier reporting also identified hardware or device faults and suspected interference with wiring or components among reported issues. Those possibilities do not establish the cause in any individual vehicle. 123

Workshops and inspection centres have also reported blank or flickering displays, on-screen errors, intermittent operation and loss of power. A screen symptom alone does not identify whether the underlying problem is wiring, the device or something else; it calls for a check rather than a presumed repair. 13

Car-park entry problems can be separate from those electrical faults. The transport ministry says ERP 2.0 OBUs are compatible with existing Electronic Parking System car parks, but a vehicle’s OBU antenna may be outside the car-park antenna’s detection range. Repositioning the vehicle can help; in other cases, an affected antenna may need recalibration. 31

What should drivers and fleet operators do?

LTA says authorised OBU installations are performed by trained technicians and that it audits those workshops. It has also said it will help expedite follow-up appointments and provide on-site technical support. Inspection-centre operators VICOM and Indeco have described rectification cases as low, while acknowledging the post-installation symptoms they encounter. 1543

If an OBU loses power, shows errors or works only intermittently, arrange a check with the installer or an authorised OBU inspection centre; LTA publishes a list of centres. For a car-park detection problem, first check whether repositioning the vehicle resolves it, and seek help if the problem persists. Drivers can view OBU charging details in the ERP 2.0 app, but a lit display alone should not be taken as proof that every charge is correct. 173130