How do I change the burner spark igniter on a PCS486GL Thermador Professional cooktop?

SOURCE: Thermador Gas Cooktop Won't Stop Clicking : SGC304RS

theres a part in the cooktop called a spark modual. replace it. when i goes bad the problem your having is what it causes

SOURCE: Romvoing the top of my Whirlpool Cooktop

well usually you have to remove the knobs. thentake all of the caps off of the burners. sometimes there are scres that hold the burner caps on. make sure you turn the power off. Then after you have done this the glass should come right off. If not there may be screws under the cooktop. Do these first steps and let me know how it goes.

SOURCE: Cleaning Thermador Cooktop?

To clean the stainless around the star burners try applying Easy-Off oven cleaner around the stars with a Q-tip (spray the cleaner onto the stainless surface first because it's very hard to control the spray output). The cleaner will make your stainless sparkle and the Q-tips allow you to get close enough while controlling the application. Scrub gently with the Q-tip and the stains will disappear within minutes. Wash thoroughly with a wet cloth. I've used this on my older model Thermador stainless cooktop for 5 years.

SOURCE: spark module will not stop after lighting burner

The module might not sense the flame: check electrical connections: wire (and its contacts0 and conections by fryer chasis; to be sure please bond with 18AWG wire pilot burner with spark module green wire.
MarKor

SOURCE: how do I remove the spark igniter when replacing a burner bowl

The spark ignitor is attached to the burner bowl by a retaining clip under the bowl. Simply remove the two screws on the top of the bowl, then you can slide the clip off from the underside