2001 Mercedes S500 P0500 and P0720 Fault Diagnosis - Check Engine Light On After Tire Change
Hi, I'm Mike and I'm experiencing a problem with my 2001 Mercedes-Benz S500. Yesterday, after replacing the rear tires (size 245/45R19), my check engine light turned on. The diagnostic codes retrieved are P0500 and P0720. I'm not sure what's causing this issue and would appreciate any guidance. Thank you in advance for your help.
The P0500 code on your 2001 Mercedes S500 indicates that the ESP control module has not received a signal from the rear left wheel speed sensor. The P0720 code means the transmission is not receiving the vehicle speed signal from the ESP module. Since the ESP and transmission work together to determine accurate vehicle speed, it's important to inspect the left rear wheel speed sensor for proper readings and any physical damage that may have occurred during tire installation. Please check both the sensor functionality and for signs of impact or misalignment after the replacement. Let me know your findings so we can proceed further.