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The first ISF I checked out, I was able to see it thru here, deep straight down with a very bright flashlight. If its been leaking a while, pink residue will be visible. Same for the underside of the car, on the transmission. Mine still shows underneath, faint evidence from when it was leaking (I bought the car with the leak already repaired)
First quick check is to take a look at the coolant level in the reservoir. If that is low, you should snoop further. Regardless, you should look further, but this is a first step and how I diagnosed mine.
SERVICE: ALL WIPER FUNCTION WORK PROPERLYDESCRIPTION: ALL WIPER FUNCTION WORK PROPERLY ~|~CUSTOMER STATES CHECK TO SEE IF ALL SPEED FUNCTIONS OF WIPERS ARE WORKING AND ADVISE. ~|~CUSTOMER STATES CHECK TO SEE IF ALL SPEED FUNCTIONS OF WIPERS ARE WORKING AND ADVISE. ~|~ALL WIPER FUNCTION WORK PROPERLY
SERVICE: OEM OIL & FILTER CHANGEDESCRIPTION: OEM OIL & FILTER CHANGE ~|~CUSTOMER STATES OEM OIL & FILTER CHANGE ~|~OIL CHANGE IS DUE ~|~OEM OIL & FILTER CHANGE
43648 MILES
DATE: 07/21/2015
REPAIR# 0011442REPORTED BY: Lexus of Las Vegas
SERVICE: ELE-INSP FAN/REPL SCREWSDESCRIPTION: ELE-INSP FAN/REPL SCREWS ~|~ELE LIMITED SERVICE CAMPAIGN (LSC) ELE - CERTAIN 2008 - 2012 MODEL YE ~|~ELE RECALL ~|~ELE-INSP FAN/REPL SCREWS
SERVICE: PERFORMED FACTORY/DEALER 45,000 MILE SERVICEDESCRIPTION: PERFORMED FACTORY/DEALER 45,000 MILE SERVICE ~|~CUSTOMER STATES FACTORY/DEALER 45,000 MILE SERVICE ~|~FACTORY/DEALER 45,000 MILE SERVICE ~|~PERFORMED FACTORY/DEALER 45,000 MILE SERVICE
SERVICE: PERFORMED MAINTENANCE INSPECTIONDESCRIPTION: PERFORMED MAINTENANCE INSPECTION ~|~CUSTOMER STATES PERFORM MAINTENANCE INSPECTION ~|~PERFORM MAINTENANCE INSPECTION ~|~PERFORMED MAINTENANCE INSPECTION
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
38716 MILES
DATE: 02/02/2015
REPAIR# 0098128REPORTED BY: Lexus of Las Vegas
SERVICE: PERFORM FACTORY/DEALER 40,000 MILE SERVICEDESCRIPTION: PERFORM FACTORY/DEALER 40,000 MILE SERVICE ~|~CUSTOMER STATES FACTORY/DEALER 40,000 MILE SERVICE ~|~SERVICE ~|~PERFORM FACTORY/DEALER 40,000 MILE SERVICE
SERVICE: PERFORMED MAINTENANCE INSPECTIONDESCRIPTION: PERFORMED MAINTENANCE INSPECTION ~|~CUSTOMER STATES PERFORM MAINTENANCE INSPECTION ~|~PERFORM MAINTENANCE INSPECTION ~|~PERFORMED MAINTENANCE INSPECTION
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE ~|~NOTED ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
SERVICE: REPLACE FRONT BRAKE PADS AND REFINISH ROTORSDESCRIPTION: REPLACE FRONT BRAKE PADS AND REFINISH ROTORS ~|~CUSTOMER STATES REPLACE FRONT BRAKE PADS AND REFINISH ROTORS ~|~FRT BRAKES AND ROTORS BELOW MIN SPECS. ~|~REPLACE FRONT BRAKE PADS AND REFINISH ROTORS
SERVICE: CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE COMPLETEDDESCRIPTION: CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE COMPLETED ~|~CUSTOMER STATES CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE COMPLETED ~|~NO WASH ~|~CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE COMPLETED
SERVICE: PERFORMED EXPRESS VEHICLE INSPECTIONDESCRIPTION: PERFORMED EXPRESS VEHICLE INSPECTION ~|~CUSTOMER STATES PERFORM EXPRESS VEHICLE INSPECTION ~|~PERFORM EXPRESS VEHICLE INSPECTION ~|~PERFORMED EXPRESS VEHICLE INSPECTION
SERVICE: REPLACE BATTERY AND RESET CLOCK ASSY AND WINDOWSDESCRIPTION: REPLACE BATTERY AND RESET CLOCK ASSY AND WINDOWS ~|~CUSTOMER STATES VEHICLE WILL NOT START, BRAKE PEDAL WAS REALLY STIFF AND HARD TO PUSH MULTIPLE TIMES, NOT JUST ONE TIME. INSPECT AND ADVISE. ~|~FOUND BATTERY FAILED LOAD TEST ~|~REPLACE BATTERY AND RESET CLOCK ASSY AND WINDOWS
29049 MILES
DATE: 04/13/2013
REPAIR# 0049052REPORTED BY: Lexus of Las Vegas
SERVICE: LOANERDESCRIPTION: LOANER ~|~CUSTOMER STATES LOANER CAR $9.00 FUEL USAGE FEE ~|~LOANER ~|~LOANER
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
SERVICE: REPLACE INTERNAL TRUNK RELEASE LEVERDESCRIPTION: REPLACE INTERNAL TRUNK RELEASE LEVER ~|~IS 350 & IS-F PRODUCT UPDATE DLB - REMEDY NOTICE - CERTAIN 2006 TO EARLY 2013 M ~|~SSC ~|~REPLACE INTERNAL TRUNK RELEASE LEVER
19672 MILES
DATE: 04/01/2013
REPAIR# 0048187REPORTED BY: Lexus of Las Vegas
SERVICE: 2010 THROUGH EARSAFETY RECALL DLA - REMEDY NOTICE - 2006 THROUGH EARLY 2012 MODESCRIPTION: 2010 THROUGH EARSAFETY RECALL DLA - REMEDY NOTICE - 2006 THROUGH EARLY 2012 MO ~|~2010 THROUGH EARSAFETY RECALL DLA - REMEDY NOTICE - 2006 THROUGH EARLY 2012 MODEL ~|~DLA ~|~2010 THROUGH EARSAFETY RECALL DLA - REMEDY NOTICE - 2006 THROUGH EARLY 2012 MODEL
SERVICE: CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE CDESCRIPTION: CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE C ~|~CUSTOMER STATES CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE COMPLETED ~|~CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE C ~|~CUSTOMER REQUEST NO CAR WASH PLEASE CONTACT ADVISOR WHEN SERVICE C
SERVICE: MOUNT AND BALANCED 1 NEW LEFT FRONT TIRE.DESCRIPTION: MOUNT AND BALANCED 1 NEW LEFT FRONT TIRE. ~|~CUSTOMER STATES NAIL IN LEFT FRONT TIRE, PLS REPLACE LF TIRE.EST $337 ~|~SIDEWALL PUNCTURE. NOT REPAIRABLE ~|~MOUNT AND BALANCED 1 NEW LEFT FRONT TIRE.
SERVICE: PERFORM MAINTENANCE INSPECTIONDESCRIPTION: PERFORM MAINTENANCE INSPECTION ~|~CUSTOMER STATES PERFORM MAINTENANCE INSPECTION ~|~CUSTOMER STATES PERFORM MAINTENANCE INSPECTION ~|~PERFORM MAINTENANCE INSPECTION
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
10316 MILES
DATE: 05/17/2012
REPAIR# 0025203REPORTED BY: Lexus of Las Vegas
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES LOANER CAR $6.00 FUEL USAGE FEE ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
SERVICE: REPLACE DIRVER SIDE LOWER WEATHERSTRIPDESCRIPTION: REPLACE DIRVER SIDE LOWER WEATHERSTRIP ~|~CUSTOMER STATES LEFT REAR DOOR SEAL IS LOOSE/HANGIN --INSTALL S.O.P.-- ~|~DRIVER SIDE LOWER WEATHERSTRIP CLIPS DAMAGE ~|~REPLACE DIRVER SIDE LOWER WEATHERSTRIP
SERVICE: PART ORDEREDDESCRIPTION: PART ORDERED ~|~CUSTOMER STATES LEFFT REAR DOOR SEAL IS LOOSE & HANGING ~|~LEFT SIDE DOOR MOULDING LOOSE ~|~PART ORDERED
SERVICE: PERFORMED 5,000 MILE SERVICEDESCRIPTION: PERFORMED 5,000 MILE SERVICE ~|~CUSTOMER STATES 5,000 MILE SERVICE ~|~PERFORM 5,000 MILE SERVICE ~|~PERFORMED 5,000 MILE SERVICE
SERVICE: ROAD TESTED VEHICLE. INSPECTED BRAKES, DUSTED BRAKE PADS AND ROTORS. HIGH PERFORDESCRIPTION: ROAD TESTED VEHICLE. INSPECTED BRAKES, DUSTED BRAKE PADS AND ROTORS. HIGH PERFOR ~|~CUSTOMER STATES BRAKES MAKE LOUD SQUEAL SOUND WHEN BRAKING ~|~CUSTOMER STATES BRAKES MAKE LOUD SQUEAL SOUND WHEN BRAKING ~|~ROAD TESTED VEHICLE. INSPECTED BRAKES, DUSTED BRAKE PADS AND ROTORS. HIGH PERFORMANCE BRAKES** SLIGHT METALIC GLOSSED ROTORS. COULD NOT DUPLICATE CUSTOMER'S CONCERN AT THIS TIME. NO REPAIRS RECOMMENDED AT THIS TIME
988 MILES
DATE: 09/01/2011
REPAIR# 0007310REPORTED BY: Lexus of Las Vegas
SERVICE: 1,000 MILE SERVICEDESCRIPTION: 1,000 MILE SERVICE ~|~CUSTOMER STATES 1,000 MILE SERVICE ~|~30 DAY INSP. ~|~1,000 MILE SERVICE
SERVICE: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUEDESCRIPTION: PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE ~|~CUSTOMER STATES PROVIDED LEXUS LOANER VEHICLE PER LARRY ~|~LOANER ~|~PROVIDED LEXUS LOANER VEHICLE-95.00 DOLLAR PER DAY VALUE
SERVICE: SUBLET:EXOTICAR PAINTWORKS REPAIR DRIVERS SIDE LOWER PANELDESCRIPTION: SUBLET:EXOTICAR PAINTWORKS REPAIR DRIVERS SIDE LOWER PANEL ~|~CUSTOMER STATES SCRATCH ON THE BOTTOM OF CAR (SEE LARRY) ~|~SUBLET:EXOTICAR PAINTWORKS REPAIR DRIVERS SIDE LOWER PANEL ~|~SUBLET:EXOTICAR PAINTWORKS REPAIR DRIVERS SIDE LOWER PANEL
11 MILES
DATE: 07/19/2011
REPAIR# 0004175REPORTED BY: Lexus of Las Vegas
SERVICE: PERFORM PRE-DELIVERY SERVICE & INSPECTION.DESCRIPTION: PERFORM PRE-DELIVERY SERVICE & INSPECTION. ~|~CUSTOMER STATES PERFORM PRE-DELIVERY SERVICE & INSPECTION. ~|~CUSTOMER STATES PERFORM PRE-DELIVERY SERVICE & INSPECTION. ~|~PERFORM PRE-DELIVERY SERVICE & INSPECTION.
SERVICE: PURGE AND REFIL TIRES WITH NITROGENDESCRIPTION: PURGE AND REFIL TIRES WITH NITROGEN ~|~CUSTOMER STATES PURGE AND REFIL TIRES WITH NITROGEN ~|~CUSTOMER STATES PURGE AND REFIL TIRES WITH NITROGEN ~|~PURGE AND REFIL TIRES WITH NITROGEN
SERVICE: PUT LICENSE BRAKET IN TRUNKDESCRIPTION: PUT LICENSE BRAKET IN TRUNK ~|~CUSTOMER STATES INSTALL REAR LICENSE FRAME AND PUT LICENSE BRACKET IN TRUNK ~|~CUSTOMER STATES INSTALL REAR LICENSE FRAME AND PUT LICENSE BRACKET IN TRUNK ~|~PUT LICENSE BRAKET IN TRUNK
The coolant level was a little low when I opened the hood. Hopefully it's not a bad sign. I didn't see any sign of it by where it was pointed out or when I checked under the car. I didn't put on the hoist to check the undercarriage.