Hilti tools service lights

We're not ignoring your question. We're just waiting to see if somebody knows for certain about your issue.
I can only speculate. My speculation is that the manufacturer disables the tools solely because it's time for them to be oiled and service-checked.
Whether that's done on a long-duration timing circuit, heat sensor, or some other method: that' be my guess. But it's only a guess.
Maybe somebody will answer your question with a definitive answer about Hilti tools.
I don't think many of us want to speculate about disabling your reset circuit, until we have a better idea of what tripped it.

 

Your speculation sounds pretty close to me. EXCEPT, it would be pointless to build this shut-down circuit and integrate it into to those tools if it could be easily over-ridden.
That 'flashing light', is bound to be a coded signal; not just a bright flash. You'd need their coded signal to reset.
I know you don't want to hear this, but I think you should pass-up this opportunity.
The manufacturer would also make it difficult to simply cut-out their fail-safe device. Doing so will probably trip another disable mechanism to prevent activation of the tool.
It's your choice, but that's my input.
You mentioned cars, so I'll add my own story:
I've (still) got a 1987 Dodge van. One of the 'check engine' lights came on years ago. The thing was running fine, but I took it to the dealer to check it anyway in case there was some problem.
They 'serviced' the vehicle for $327. I got the van back and the next day the light came back on. I called the dealer and raised holy hell. The service rep was busy, so he just gave
me the scoop for me to resolve the problem. There's a little black box on the steering column just under the dashboard. Inside of this little black plastic box, is a 9V battery.
That battery box is connected to the 'check engine' light through a 3-year long-duration LM555 timer. When the 9V battery gets low, it trips the circuit to activate the 'check engine' light.
It's there because the manufacturer thinks that the van should be checked at least once every three years. Can you believe it?
I don't know what causes the trip that needs to be reset in your Hilti's. I just figure it's going to be deliberately difficult for you to over-ride it.
Good luck whichever way you go with this.

 

Hi
I have a hilti breaker that had a service light on. I sent it back to them in Dublin after exploring all the options to avoid their 371 euro credit card up front charge. Anyway they sent it to their repair Base in Scotland got the return address wrong .lost it for a while and eventually got it bac k
Point is ill never buy a new hilti again simply because they don't tell you about this light and the cost of getting it sorted so take my advice and stay clear of hilti s with a service light

 

Check youtube.
The routine service can be bypassed or rebooted using a laser.