2018 Honda Civic Si electrical system problems

“The electric power steering (EPS) system failed/malfunctioned this past week. When going over 35 mph my steering wheel would become "knotchy/jerky" and lock up and be difficult to turn. As a result, I took it to Honda to which they stated my whole rack and pinion needed total replacement. No warning signs, messages, icons, or lights came on in my car.”

“HONDA RECALL THE 2018 CIVIC FOR AC COMPRESSOR SHAFT SEAL AND THE DEALER REPAIR THE AC SYSTEM 3 TIMES AND THE PROBLEM WAS NOT FIX. ALSO HAS A RECALL FOR A FUEL PUMP MOTOR BUT IM NOT SURE IS WAS CORRECT IT FOR THE OLD OWNER.”

“Car battery died 3 times. Bought new battery after it being towed 2 times. 500. Door handle had to be replaced labor and costs over one thousand dollars. September 2024 bought used. This should be a recall.”

“The standard OEM key fobs for Honda Civics, for several model years, and possibly for other Honda models, have a "feature" that seriously affects driver and passenger safety, and that cannot be disabled. If two buttons are depressed simultaneously on the key fob for a period of time, all of the windows go down and the doors unlock. I have encountered dozens and dozens, perhaps hundreds, of owner complaints about this "feature" on various Internet bulletin boards. Typically, the stories go, "I parked downtown in an unsafe area and I came back to my car and found that it was unlocked with all of the windows open and someone stole everything from my car," or "I parked outside just before a rain storm and I returned to my car to find all of the windows open without my knowledge and the interior of my car was soaked." Single women could encounter this problem and be attacked by people hiding in the back seat. Apparently, if anything in one's pocket depresses the keys on the fob, without one's knowledge, this occurs. It has happened to me, where I'll bend down to tie my shoe and walk away and I'll return hours later to find all the windows open during a rain storm or…”

“1) Caused by faulty Body Control Module (BCM). 2) Can't enter car, key fob won't unlock car. Dashboard is illuminated when car is off, I can see it through my window. 3) Alarm horn went on when car is off. 4) Turn on my car, multiple errors, go to drive the car thinking I need to reset it from battery change. Shut off my car, but go to turn it back on. Car cranks but won't turn on, shows multiple errors on dash. 5) Dash shows "keyless start system problem" and car won't turn off. When pushing button to turn off car, head lights and a/c turn off but the engine still runs, push/start button flashes. Disconnected battery, still runs. Had to pull fuel or ECU fuse to stop the car running. 6) Can't reliably get my car to start. Issue is intermittent.”

“My AC system in my 2018 Honda has now failed twice under 80000 miles. The first time the compressor and condenser were leaking and failed around 50000 miles which the dealership said was due to a new refrigerant that Honda had started using for this generation of civics. Following this repair, Honda extended the warranty for these components of the AC system. Early in July 2024, I had the same issues with my AC blowing hot air only and making hissing and banging noises on the passenger side at around 75000 miles. Took this to the dealership and they again said that the compressor and condenser were leaking and had failed but also that the evaporator valve was leaking and failed due to the compressor and condenser issues. However, Honda has not extended their warranty for these parts and this would be an out of pocket cost. Honda needs to own up to their faulty AC system used in this generation of Honda civics and extend the warranty to all involved parts or issue a recall and properly fix the system so it isn’t failing every 18 months.”