sure DD

In Turkish, the stressed word in a sentence is usually the one just before the predicate.

in this case, the predicate is "geliyor".

if you say

O, arabayla oteldeki klimayi onarmaya geliyor

the stressed word is "repair"

if you say

O, oteldeki klimayi onarmaya arabayla geliyor.

the stressed word is "car".

If you say

arabayla oteldeki klimayi onarmaya o geliyor

the stressed word is "he"

btw. you don`t need to use the "o" in the sentence.

Hey, just a small addition

Hi Ian, as a fellow learner I will try to break down dilliduduk´s additional correction as I understand it.

O, otelin klimasýný onarmak için, arabayla geliyor

klima = air-conditioning

klimasý = the air-conditioning

otel = hotel

otelin = hotel´s .... (and what is being owned or possessed by the ´hotel´ needs the possessive suffix "i", and also a buffer letter as "clima" ends in a vowel)

otelin climasý = the hotel´s air-conditioning

(and to indicate it is an object in the sentence (what needs to be fixed), the additional "ni" suffix on the climasý then tells you that the hotel´s air-conditioning is what is to be fixed)

otelin klimasýný onarmak = to fix/repair the hotel´s air-conditioning