2003 RX300

Asked by Jul 20, 2009 at 08:41 PM about the 2003 Lexus RX 300

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


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


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

1 of 1 people found this helpful.

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.

Your Answer

RX 300

Looking for a Used RX 300 in your area?

CarGurus has 856 nationwide RX 300 listings starting at $1,600.


Lexus RX 300 Experts

  • #1
  • #2
    John Orlando
  • #3
View All

Related Models For Sale

Used Lexus RX 330
47 Great Deals out of 1,421 listings starting at $3,400
Used Toyota Highlander
544 Great Deals out of 42,485 listings starting at $2,009
Used Toyota RAV4
651 Great Deals out of 61,906 listings starting at $1,995
Used Acura MDX
439 Great Deals out of 13,130 listings starting at $795
Used Honda CR-V
707 Great Deals out of 62,079 listings starting at $1,495
Used Nissan Murano
441 Great Deals out of 24,517 listings starting at $400
Used Lexus ES 300
8 Great Deals out of 825 listings starting at $1,500
Used Toyota 4Runner
335 Great Deals out of 29,317 listings starting at $1,500
Used Toyota Camry
1,072 Great Deals out of 76,710 listings starting at $1,100

Used Cars For Sale

2003 Lexus RX 300 For Sale
3 Great Deals out of 107 listings starting at $2,500
2002 Lexus RX 300 For Sale
6 Great Deals out of 210 listings starting at $2,500
2001 Lexus RX 300 For Sale
4 Great Deals out of 181 listings starting at $1,600
2000 Lexus RX 300 For Sale
213 listings starting at $2,350

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.