One problem related to cooling fan has been reported for the 2003 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mazda MAZDA6 based on all problems reported for the 2003 MAZDA6.
While waiting in my car at the bank with the air conditioning on I noticed an odd smell and then the temp gauge started rising fast. I pulled to the side immediately and turned my car off and waited 30 minutes. I took my car in the next day and was informed my cooling fan control unit needed replacing, which they did. I had to ask for my invoice which was given to me. It is working fine now, but I find it odd that such a new car could have such a problem.