Electric problem in Toyota ist 2009

[amilaran123]

My car was Toyota ist 2008 model (ncp110), had a electric power problem in few weeks a go, suddenly power cut off the car & back again in second,I was checked the fuse box & cleaned,relay unit & juntion was checked & cleaned, replaced new battery, unplug the accessories conect, but problem not sort out.some times delayed power steering was on in faulty time.can I sort out this problem..... Thank..

[Rumesh88]

When you say power cutoff do you mean that even things like AC, headlights go off? Or is it just the engine suddenly dying?

[Dudz2020]

I also have the same problem with my ist.the radio jst turns off while um driving and sometimes everthing  including the engine turns off and restarts almst instantly.what could it be

Edited October 19, 2020 by Dudz2020