Clean by the standard method for whichever surface you have, and work from the rating plate rather than the brand name, because searching LG alone returns American and Korean models with different controls and finishes that were never sold in Australia.
LG's cooking presence in Australia is much narrower than its recognition, which is built on televisions, laundry and refrigeration.
Search the model, not the badge
This is the practically useful advice for an LG hob, and it applies before any cleaning question.
Searching the brand name returns a very large volume of content about American and Korean cooktops that were never sold here, with different control layouts, different surface types and in some cases different fuel. Following that advice on an Australian LG can mean using the wrong method entirely.
The rating plate is usually on the underside of the hob, which means looking up from inside the cabinet below. Photograph it once and the problem goes away permanently.
Establish which surface you have
LG sells both induction and radiant ceramic here and they look identical, so establish which yours is before choosing a product or, more importantly, before deciding when to clean it. Our cooktop cleaning guide covers how to tell them apart.
The distinction matters more than the product does. On radiant ceramic the moment to act is while the zone is still warm; on induction spills rarely bake on at all.
Service familiarity
Worth mentioning because it is the other consequence of a narrow range. A technician who has seen hundreds of Westinghouse and Bosch hobs may have seen very few LG cooking appliances, which is worth asking about for anything beyond a clean.
Bought as part of an appliance set
LG hobs are frequently bought by households already committed to the brand elsewhere, often as part of a package deal spanning a fridge, a laundry pair and a television.
That has one practical implication worth knowing. The appliances in such a package are bought at the same time but do not age at the same rate, and the cooking appliances are the ones that need attention soonest. A fridge asks for nothing for a decade; a hob accumulates from the first week.
So an LG kitchen bought as a set is usually a kitchen where the cooking appliances have been treated with the same expectations as the ones that genuinely do not need maintenance. If that describes yours, the hob and the oven are likely further behind than the rest of the house suggests, and the LG oven in particular is worth checking rather than assuming.
What actually goes wrong
Advice followed from an overseas model that behaves differently.
A radiant ceramic LG treated as induction, so spills are left to cool.
A hob that will not respond, which is moisture on the controls rather than a fault.
Should you do it yourself?
Do it yourself, once you know which surface you have.
Get someone in if a ceramic top has months of baked film, or alongside the LG oven below.