A couple more. Do the brake lights still work? How about the mirror adjust? Windscreen washer pump?
There doesn't seem to be even a common fusible link or relay, but all of the circuits you mention, plus those above, appear to need the accessory position to be live. If your ignition switch is faulty (or a connection to this circuit) you might get these symptoms.
In the passenger fusebox, see if you can check for volts on fuse 11 and fuse 4 (ignition on). Even if the fuses are OK, it's possible there's no supply to them from the ignition switch.
It's also very possible you have a kbus fault. I typed all the above stuff before I saw that the indicators work outside but not IPK
. However the voltage feed could still be the issue. I'll keep thinking, but do you have hiline radio?
EDIT: the IPK
feeds might cause some of these problems. Check fuses 15 16 and 29 in the passenger box. I doubt it's a fuse because sometimes it's OK sometimes not.