Is there a way to check if a relay is functioning?

Whats the idea
should you change relays just becasue a car has almost 200K
would you say that they have served there useful life on a 25 yo car?

My volvo ignit relay went at 125K

I changed the OVR in the benz

have a hard hot/warm start

looking into fuel pump relay
is that the ignition relay?

I have to be carfeul as its a Euro & I have found it takes different relays.

Hoping this wasn;t the case w the OVR I got...
drats

I suppose before we all start changing pumps & injectors
it would be eise to check or replace a relay

__________________


83 500 SEC Euro 198K