"PERFORM THE PROCEDURE OUTLINED IN THIS SERVICE INFORMATION ON ALL AFFECTED VEHICLES BEFORE CUSTOMER DELIVERY OR THE NEXT TIME THEY ARE IN THE SHOP FOR MAINTENANCE OR REPAIRS. SUBJECT Service Action: Retrofit of Engine Coolant Temperature Sensor. Internal corrosion can form in the engine coolant temperature sensor. This corrosion leads to internal bridging of the contacts, which can cause an inaccurate engine temperature reading. This false reading can lead to difficulty in the engine starting and/or a ""Service Engine Soon"" lamp being illuminated."
