Where is the fuel pump relay of BYD F3 located?
3 Answers
BYD F3 fuel pump relay is located on the wiring harness assembly, not in the fuse box. The wiring harness assembly is positioned under the steering wheel. A relay is an automated electrical switch that operates based on electromagnetic induction. The fuel pump circuit is generally equipped with an oil pressure relay, which functions to close the relay contacts when the required oil pressure is reached. The dimensions of the BYD F3 are 4533mm in length, 1705mm in width, and 1490mm in height, with a wheelbase of 2600mm. It is powered by a 1.5L VVL (Variable Valve Lift) engine, delivering a maximum power of 97kW and a maximum torque of 144Nm.
I'm a seasoned mechanic with years of experience working on BYD F3 models. The fuel pump relay is typically located in the engine compartment fuse box. To be specific, open the hood and you'll see a black plastic box, usually positioned near the battery or on the right side close to the firewall. Look for the one marked FP or FUEL PUMP on the box cover. If you're inexperienced, don't tamper with it randomly - first use a multimeter to check for electrical continuity. If it's faulty, simply replacing the relay will solve the problem. Remember to remove the key and cut power before working to prevent short-circuit hazards. Relay burnout often occurs due to fuel pump overload, aging components, or unstable signals, so after repair it's best to inspect the entire fuel system to avoid recurring issues. I've handled many similar cases - safety always comes first.
I play with BYD F3 modifications, and the fuel pump relay can be easily found in the main fuse box in the engine bay. Lift the box cover and you'll see a bunch of small components; the fuel pump one usually has a blue or green plug, clearly labeled, so just replace it. I once had a car that wouldn't start, and after testing, it turned out this part was faulty. Buying a replacement and swapping it fixed the issue immediately. The location varies with the model year, but for most F3s, it's on the right front side. Bring a flashlight when working—labels are hard to see in dim conditions. Don't forget to check if the wiring harness contacts are loose to avoid recurring issues. DIY saves money, but be careful not to damage the circuits; having a partner to hand you tools is safer.
