I have a 2001 S600 with 128,620 miles on it. Was driving it the other day and the CEL (check engine light) came on. drove it home and hooked up my obd2 code reader to find 8 codes stored in it. P0311,P0307,P0309,P0312,P0308,P0310,P0300 TWICE. it appears that all of thes cylinders are on the drivers side cylinder bank. could it be the ignition module going bad on that side. It appears to shut the whole side down together as it looses almost all of its pep when this happens. I can cut the car off or let it cool down and it will fire on all cylinders again . Any direction I can start to look at will be greatly appreciated.