Q: My BMW X3 2.5l running ruff the hand on mileage jumps when I start it up no check engine light has come on

The power outlets allow you to use electronic devices in your vehicle, as long as the car is turned on. Items such as cell phones can be charged with the power outlets. Your car has four power outlets: 1. One...

The most common failure is the window motor and regulator. I recommend having it checked to see what failed and a window motor and regulator replaced as an assembly is the most common repair. I recommend you have a mechanic...

Hello. You did not specify the mileage of your vehicle but if the thermostat is not changed around every 60,000 miles it may cause overheating. Thermostat replacement is considered routined maintenance just like brakes or oil changes. I would recommend...

The output speed sensor is a very important sensor for the computer in your BMW 540i. It uses this signal to determine shift points as well as when to lock up the torque converter. If the computer detects a problem...

If you have replaced all of those components and you're still getting issues then the problem should be in the fuse box (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuse-box) with the body control module fuse located in it (on the driver side) or there is an...

The level sensor may be at fault giving off a false reading and having the car turn on the warning light (https://www.yourmechanic.com/services/warning-light-is-on-inspection). This is an electrical problem in the case that an electrical component has failed. I suggest hiring an...

Hi there - check the fuses for the brake lights, the brake light bulbs, and the ground for the brake lights (should be OK since other lights work, but....). If these check out correctly, check for power to the brake...

If the problem started immediately after you washed the car, obviously that raises the possibility of water damage, but what happened could also be just simply coincidental as well, that is you have an electrical problem unrelated to washing the...

This problem of erratic idle speed is often referred to as "surging" or "hunting". The causes include a faulty idle air control valve or circuit (IAC), a faulty ECM (not common), faults in the fuel pump control circuit, defective spark...