2003 RX300

Asked by My6pak Jul 20, 2009 at 08:41 PM about the 2003 Lexus RX

Question type: Maintenance & Repair

My 2003 RX300 tends to overheat while driving with the ac on in the city. The manual says to turn off the a/c. Not a very comfortable solution. Any suggestions?

3 Answers
2,695

Tom answered 15 years ago

check for paper or objects like cats stuck in front grill that will restrict air flow. 2nd make sure your engine fan turns on when you turn a/c on!. Make shure you have all your plastic panels cause air funneling is important. If that still doesnt work you probably have a poor cooling problem which i doubt. your engine fan is probably not turning on or paper bag got stuck underthere

1 people found this helpful.
Mark helpful
1,825

John answered 15 years ago

Check coolant and thermostat. This is most likely the issue.

1 people found this helpful.
Mark helpful
40

OBDII answered 13 years ago

Check for proper cooling fan operation, at least 1 fan should be in operation with the AC on, also make sure that the air flow through the radiator is not blocked ie dead bugs, dirt etc.

Mark helpful

Your Answer:

Related Questions

  • 2003 RX300 3 Answers

    My 2003 RX300 tends to overheat while driving with the ac on in the city. The manual says to turn off the a/c. Not a very comfortable solution. Any suggestions?

    2003 Lexus RX

    -

    Maintenance & Repair

  • 2003 Lexus RX300 Timing Belt or Chain? 1 Answer

    I wanted to know if 2003 Lexus RX300 has timing belt or timing chain.

    2003 Lexus RX 300 AWD

    -

    General

  • how can i improve the fuel economy omy 2003 lexus rx300. i've seen forums where owners "modify" the horsepower or reprogram shift points. 2 Answers

    how can i improve the fuel economy on my 2003 lexus rx300. I am getting 22 - 23 mph on non crowded flat roadways. Otherwise 16 - 17 mph. i've seen forums where owners "modify" the horsepower or r...

    2003 Lexus RX 300 AWD

    -

    Maintenance & Repair

  • Lexus rx300 won't star 2 Answers

    My Lexus rx300 53 plate has died I have lights and dash but no power tried to jump start but nothing plz help asap

    2003 Lexus RX 300 FWD

    -

    Maintenance & Repair

  • Lexus rx300 2003 1 Answer

    Check engine light and vsc keeps coming on after clearance. Auto zone ran codes getting PO441,PO442,PO446,PO420. THEY ALL have to do with evaporative emission sys. Either small leak or vent contr...

    2003 Lexus RX 300 AWD

    -

    Maintenance & Repair

RX

Looking for a Used RX in your area?

CarGurus has 858 nationwide RX listings starting at $3,995.

Postal Code:

Shortcuts

Search Lexus RX Questions

CarGurus Experts

  • #1
    tenspeed
    Reputation
    8,390
  • #2
    Papaobewon
    Reputation
    5,620
  • #3
    Nicolaos Vlachos
    Reputation
    5,170
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Lexus GX
4 Great Deals out of 54 listings starting at $13,800
Used Toyota Highlander
32 Great Deals out of 737 listings starting at $2,495
Used Lexus ES
15 Great Deals out of 192 listings starting at $3,888
Used Acura MDX
37 Great Deals out of 756 listings starting at $6,495
Used Toyota RAV4
100 Great Deals out of 2,089 listings starting at $3,888
Used Lexus LX
4 Great Deals out of 27 listings starting at $28,900
Used Toyota 4Runner
12 Great Deals out of 309 listings starting at $9,700
Used Lexus IS
18 Great Deals out of 305 listings starting at $6,449
Used Lexus LS
28 listings starting at $9,995
Used Honda CR-V
99 Great Deals out of 3,843 listings starting at $1,795
Used BMW X5
38 Great Deals out of 1,133 listings starting at $3,995
Used Toyota Camry
48 Great Deals out of 979 listings starting at $2,212

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.