AJ
2019-04-22 00:23:21 UTC
My little sister has been having issues with her 2011 Mazda 3 Hatchback. Where her car would have trouble starting; no crank. This is an intermittent issue where if she waited several hours it would start up again. However, this intermittent issue became permanent in March 2019.
09/17 Sister moved to SD and issues started. Brought to a Mechanic A where they replaced the starter however the issue continued. Brought the car to Mechanic B where they stated that the car was having communication issues with the cluster. The car’s cluster was replaced, and the keys were reprogrammed.After a few weeks her car was up and running without issue.
10/18 The intermittent starting issues came back after ~ a year. Issues continued through March 2019
11/18 Check engine light came on. Went to Autozone to check the code. It gave the code: U0100 which described the issue as the ignition on or with the engineering running the PCM detected a serial communications error. Check engine light went away on its own after a few days.
12/18 Car had trouble starting; Cranked. Replaced with a new battery. Car started again.
03/19 Sister came out of class and her car did not start. Waited over 5 hours and it still did not start. She decided to have it towed to her apartment.
04/19 Search on the forums and it was noted that replacing the #20 and #21 40 Amp Fuses were reported to solve the issue. Changed the fuses but the issues continued.
Any help is appreciate! Thanks!