LTA advised motorists who experience issues with their OBUs to return to the workshops that installed the units. This is because those workshops would have the necessary records “for more effective troubleshooting”.
“In a small number of cases where more specialised attention is needed, the workshop may refer motorists to another workshop with the relevant expertise,” the authority added.
means some workshop dont know what they are doing?
Not a workshop issue imho.
Although mechanics in different workshop have different skill levels, generic mounting of the 3 piece system and hooking them up to the fuse box is a simple job. Of course, there's a possibility that the mechanic did a sloppy job.
In this scenario, generally, workshops dun want to kio sai (for free some more) for other workshops who might have done such sloppy jobs. Or the car owner might have tampered with the installation, repositioned it themselves etc, then kenna issue anyhow say the original workshop never do properly, and ask workshop 2 to fix for free.
All that said, most of the issues mentioned seem to be problems with the new OBUs hardware themselves.
Where it says some of the installed OBU hardware needs to be replaced, this one confirm is the OBU hardware issue.
Display showing that the system freeze at boot up is also an OBU hardware issue. For this case, actually the display unit is working fine, it's the main processing unit that is freezing. Display unit just showing what the main unit outputs.
The other problems where some carparks cannot detect the OBUs, this one seems more like the issue is with the carpark gantry. I see replacement works for the gantries at many carparks over the past couple of years. Maybe there some new hardware/firmware required but these carparks have not upgraded/replaced the older ones yet.
Of course special installations like those workshops who can help mount inside glove box, this type considered specialized attention. Not all workshops can do.