2002 Infiniti QX4 Q&A
2002 Infiniti QX4 Question: approx. how many miles will a timing belt last for 2002 and 2003 QX4s?
No there is no light that tells you. Usually you will hear the belt make noise but inspect it for cuts and wear because if a belt breaks it could instantly ruin your engine. I recommend replacing both. It cost around $20 bucks for a new belt. - jason94
Both of these have timing chains, So no maintenance is needed unless they get noisy or affect the timing - Valleyautotech
you do not have a belt, you have a chain, does not need to be replaced as normal maintenance - Visitor