2018 TESLA MODEL 3 Electrical System Problems

Got into car after update, screen blacked out, could not to hard reboots. App could no longer see car. Tech support couldn't remote into vehicle or get in touch with it. Had to have it towed to service center. It's been sitting there for 6 days with no diagnosis just an estimate for $530 to troubleshoot the car. This update caused my car to completely be unresponsive and undrivable. I also had a carseat in the car.

Recall items not available

Low coolant alert while in the hidden service mode only. Happens to all my 3 cars. Went to service to fill up the coolant and the warning didn’t go off. They said is a sensor gone bad and it’s $1000 to repair. What are the chances that all my 3 cars have that issue and all not actually having low coolant

The only cabin heating and defrosting mechanism in early model 3s, a PTC heater, is prone to failure leaving the vehicle without the ability to maintain clear vision through the front and side windows. This occurred on my model 3 in November of 2023 and Tesla was unable to source parts for several weeks, with a cost of $900. This failure is extremely common among model 3 in cold weather environments and is well documented online.

The Power conversion system (PCS) failed during driving, disabling the rear motor and regenerative braking. This severely affected the driving characteristics of the vehicle, including top speed, braking profile and handling.

The contact owns a 2018 Tesla Model 3. The contact stated while driving at approximately 35 MPH, the Front Passenger Safety Restraint System (FPSRS) fault warning illuminated. The contact continued driving and later contacted the manufacturer. The contact was advised by the manufacturer that he had the option to repair the Safety Restraint System by a mobile technician or the vehicle could be driven to a dealer. The vehicle had not been repaired. The contact stated that the Restraint System fault warning failure was intermittent at first but had become a recurring failure. The contact researched online and related the failure to the FPSRS wiring located under the seats, which was being damaged by the seat auto adjustment feature. The seat adjustment feature moved both seats to an upright and back position to allow ease of entry of the driver and passenger. The manufacturer had been informed of the failure....

I received a warning message that displayed, “Front Left Safety Restraint System Fault.” This is an engineering problem as the cables associated easily detach under the driver’s seat. Tesla has been long aware of this problem. They came out to my home and replaced the wire connection by installing sturdier connectors. I was subsequently was charged $329.40.

The front passenger seat driver occupancy system started sporadically malfunctioning and showing the "air bags disabled" warning even while the seat was occupied. This would put the passenger at risk in the event of a crash. The manufacturer's technician arrived to inspect the vehicle and upon hearing the description of the problem said it was likely that a cable in the seat's wire harness probably wore out from friction and that "it was a common issue in these vehicles". Upon examining the wire harness the technician confirmed that this was the issue, and the harness had to be replaced.

"Front safety restraint system fault" message comes up sporadically and then regularly. Tesla has address this issue at least four times but it has not been resolved. I was told they ordered a new seat but now they are backtracking on this.

I have had a safety restraint fault on the vehicle once before and Tesla came and replaced something. It never came back. Until I'm a couple thousand miles over the warranty and I "randomly" get another safety restraint fault. I filed the service report for them to tell me it's the seatbelt. I replaced the seatbelt and the error continues. This is a safety issue that needs to be addressed as thousands of people are having the same "fault" codes. This is a known problem teslas have and they are doing nothing to address it. I'm in shock this is allowed to happen

The PASSEMBLY POWER CONVERSION SYSTEM- 48AMP 1PHASE(1135558-04-A part is part of the powertrain attached to the battery pack.. Without it, the car is unable to charge. This failed at approximately 32,000 miles on 8/29/23 on my 2018 Tesla Model 3. The repair was not covered under the powertrain warrenty despite being a critical component.

my car no longer has ability to use the horn after a software update. I've had two dangerous incidents in the past month where a working horn would have allowed me to make another driver aware of my vehicle.

The power conversion system is failing in the car and Tesla is not covering it under the Battery Limited Warranty. The car only has about 30,000 miles on it.

Re NHTSA recall 21V00D The rear view back up camera of my Tesla 2018 Model 3 went black on August 21 starting at approx 3pm and remained black for the rest of the day through August 22. I'm planning to check today, August 24 to see if the problem still persists. Lack of the backup camera makes it very difficult to park and to see people in the car's blind spots. I've informed the dealer of the problem but I've decided to have an independent third party repair service take a look to see if the problem could possibly pertain to recall.

Tesla recalled wiring components for the Rearview camera (for parking / driving in reverse) as it suffered from severe latency. They claim to have fixed the recall but nothing changed. They don't respond to complaints that it doesn't work. This work was "completed" under the Trunk harness retrofit on the statement provided . The trunk harness affected the wires to the camera causing the latency, per recal info/Tesla rep.

I was exiting the highway onto a Blvd and I slowed down. The car all of a sudden accelerated by itself, went over the exit curb and hit the central median of the blvd. Fortunately, no vehicles on the blvd wer crossing when this happened. I was fortunately not physically hurt in the incident but it could have been afr worse if I had a vehicle in my front or on the lvd when the incident happened.

Safety restraint system fault RCM_a094

The center display that houses all of the cars instrumentation including gauges randomly goes out while driving. It will go out for 10 to 15 minutes until it recovers. This leaves me with no gauges at all including loss of backup camera, turn signals, speed and various other functions. I purchased the car two weeks ago and this has happened 5 times already.

Received an error "Front left safety restraint system fault. Service is required." error on my vehicle yesterday (7/11/2023) which disappears when lifting seat to highest position. As soon as seat is lowered more than 1/2" the error reappears and airbag light is illuminating notifying that the airbag is not enabled. This error is clearly an issue with the safety restraint system on the vehicle but Tesla will not honor fixing this under their Supplemental Restraint System Limited Warranty. The vehicle is within coverage period (<5 years and <60,000 miles). I am being told this SRS Limited warranty covers air bags, seat belt, seat belt buckles, sensors, and modules only. I have not taken the vehicle in for service as the quote I received is too expensive ($601). Please see photos for my conversation with Tesla service as well.

My car and every other 2018 or older Tesla doesn't have an audible sound safety system when reversing or driving in low speeds. I work with a blind girl who can't hear me coming. This is dangerous.

Charging power conversion system component fail to take the full capacity the charging station able to give causing very slow charging. Warranty was not covered and costing over $1500 to fix & replace. When asked that this should be Battery warranty, I was turned down and was told that it's not 'part of the battery'. This is safety concern and fire hazard

Tesla Vehicle safety concern. Safety May 1, 2023 on Rt 95 south from Washington DC to Richmond VA (near Richmond VA) at about 10:45 pm. (Please note the clock time on the vehicle is incorrect—it is about 5 minutes slower and sets to a time I hr. earlier than the current eastern time). Vehicle: 2018 Model 3 VIN [XXX] The computer system failed in the middle of highway. The computer screen where all system functionality is monitored went bank except for a Tesla icon. Losing control of vehicle including turn signals in the middle of the highway was dangerous and a safety concern. For fear of being stranded on the road I carefully drove the vehicle to home in Yorktown Va. It was scary! Much of the settings on computer and navigation info was lost. This is a vehicle defect I need to report. INFORMATION Redacted PURSUANT TO THE FREEDOM...

On April 21st 2023, by pure chance I happened to notice that, after plugging in my Model 3 to recharge at a local charger, the charging rate was lower than normal: instead of its full 32A charge, the rate was only 16A. I kept getting a notification of an issue with charging, Error: PCS_a019 "Charging slowed - Poor Grid power quality possible, unplug and retry / try different charging location" I've attempted several charging stations and all the same outcome. I've done research on this issue online and others are having the same issue. Tesla did cover a few from what I read as "battery warranty" that I've reach but most are denied as it wouldn't be part of the "battery warranty". I've reached out to Tesla and was informed my warranty was expired almost 28 days on March 23rd 2023 as it was April 21st when I made the...

the Power Conversion System (PCS), 1 of the 3 module fails, therefore, it limits the AC charge current to 32A out of the max of 48A the car was never pullged into a 48A AC charging connector, therefore, the PCS module likely to be defective

Recommended Software update is not available. Tesla App has stopped working for the past 2 months.

Power conversion system failure. Only charges 32/48 amps at destination chargers. Unsure how long this has been a problem because I just upgraded my power panel to be able to charge at 48 amps. Being told $1800 to get car to charge at expected amp limit. 90k miles on car.

The Tesla was parked and locked unoccupied with all security features enabled. When I returned to the car the front driver's side was completely crumpled with the bodywork torn , like it was reveresed in to. I was gone about 30 minutes. The car gave no notification on the app, the car alarm didn't activate and the sentry mode did not record the incident. All the things they say the car will do. I called Tesla and was told it works 99% of the time ,(but clearly when you need safety and security it doesn't) they stated that if the car gets hit a certain way it can cause the system to shut down /reboot ,so that none of these systems work... Seems wrong that this can be allowed to be the case that not only all the systems fail, that when they do fail there's no backup or way...

My Tesla Model 3 without any warning stopped working suddenly. I could not put the car in drive and there were error messages about climate control and electrical system. I had to get the car towed to the service center as it was blocking my other car in the driveway. The service center in Sunnyvale, CA diagnosed the problem to be a faulty PTC heater and has charged me over $1100 to replace it. I beileve it is quite absurd to have a fault in the HVAC system render the whole vehicle completely immobile and useless. This seems like a serious design flaw and it could lead to serious health or safety concerns.

Heater suddenly stopped working. Will not produce any heat or defrost windshield. Passenger/Driver safety affected by lack of warmth in extreme cold and visibility while driving with iced windshield. 35,000 miles on well maintained vehicle w no damage or accidents. Dealer states that resistance heater and wire harness will need replaced. No cause identified.

The power conversion system is failing on my vehicle. It is causing faults that trip the breakers at my charger and could potentially cause a major problem at my charging station. It could also cause my vehicle to be stranded or possibly lose power while driving.

The contact owns a 2018 Tesla Model 3. The contact stated that while driving at an undisclosed speed, the display screen intermittently went blank and failed to display the speedometer. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 37,740.

I experienced premature failure of all 3 modules is the vehicles PCS (Power Conversion System) part of the HV Battery System. Although a TSB was issued to replace the same part in other cars with "affected" VINs Tesla has ignored this faulty part and has declined to replace it under the vehicles HV Battery warranty even though the unit is replaced as a single unit when the HV Battery requires replacement. This is a well known issue that is being intentionally ignored by Tesla. It could leave a driver stranded in an unsafe condition or situation. I would like to see the part recalled. https://static.nhtsa.gov/odi/tsbs/2018/MC-10148850-9999.pdf

The window switches on the driver window panel have deteriorated and broken not allowing the driver to pull up the windows. For a car that’s only 3 years old this should not happen and is a major safety issue as the driver has no way of controlling the windows. I have searched online regarding this issue and have found that many other owners have experienced the same exact defect that I have, most a VIN number around 30000

Our Tesla Model 3 had a failure of LV contactor which engages the HV circuit while driving the car in a 45MPH side road. The car had a sudden shutdown with emergency brakes engaged and the car came to a stop violently. It was providence that there were no vehicles following or car was not being operated in a 75MPH freeway and hence did not end up in a rear collision accident or worse involving an 18 wheeler. We talked to Tesla service and they indicated that such contactor failures occur and the car would typically behave like it did with stopping immediately as per design. I was telling Tesla service that the car should probably move into Neutral mode rather than stopping immediately. I also heard other instances where Tesla has stopped suddenly in the media. I would like Tesla to review their current logic with handling contactor failure...

Power Conversion System (PCS) failure. This happened without warning over 60 miles from home and service center on x-range Model 3, less than 50,000 miles. Tesla did the repair, and took no responsibility for its premature failure, nor did they provide any explanation for why the failure occurred, leaving me (the owner) with a very expensive repair bill.

This is a report of suddent unintended acceleration on a 2018 Model 3 performance with 47,800 miles on the odometer - the first known occurrence on this car. At 50% state of charge, I drove the Tesla on a 10 minute trip and pulled into an underground parking garage with 3 lanes of valet parking. At about 5-10 MPH, the forward collision warning came on as I was driving towards the cones and stop sign. I brought the vehicle to a full stop with the friction brakes (not regenerative braking, which was set to LOW). The drive mode was set to HOLD, which lets the car roll forward but not backwards and doesn't CREEP when foot is off the brake. About 15-30 seconds after coming to a complete stop, my foot was hovering over the brake with maybe slight pressure up to 5%. The car suddenly lurched forward with wide...

Interior camera malfunctions which affects the full self driving package I paid for. As purchased the car was said to be feature complete for full self driving. When the software was available to me two years after purchase the interior camera was finally turned on and it doesn’t work. A cursory internet search shows that this is common. This is a hazard it can malfunction at any time due to defective camera. The service center verified that the camera doesn’t work today 1/27/2023.

On Saturday the 21st my car had been charging overnight inside my garage using the supplied Tesla charger. As I entered the car to attempt to unlock the charger, I received many system malfunction errors on the screen, stating such that the 12v battery needed to be replaced and some system could not be completed. This definitely seemed odd as I had just replaced the 4 year old battery last July after receiving such an error. Eventually the car released the charging cable, but the car was still inoperable due to the errors. I used the Tesla app to request mobile service for the first available time, which was Tuesday the 24th, and used my wife's car in the meantime. The day of the appointment I attempted to enter the car to move it outside of the garage, but the car had completely died at some point - couldn't open...

The contact owns a 2018 Tesla Model 3. The contact received notification of NHTSA Campaign Number: 21V00D000 (Electrical System, Visibility, Back Over Prevention) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact stated that recently the rearview camera intermittently flickered while in use. The failure mileage was 49,000. Parts distribution disconnect.

The Power Conversion System is failing, this makes charging the car difficult. The charge rate is reduced and charging fails without warning. There is no warning from the vehicle that the part is failing but instead says the power grid is the issue. The issue started while the car was still under warranty, but falsely claimed the problem was with the evse or the wiring to the evse. Had the failure been properly reported rather than being misleading, the vehicle could have been repaired under warranty,

This is regarding NHTSA Recall Number21V-00D. This recall is from December 21, 2021 -- i.e., over a year ago. I scheduled an appointment with Tesla in August 2022 to get this taken care of, but at the time Tesla canceled the appointment. They told me that the parts aren't available yet, but they would reach out via email or the Tesla app "soon". It has now been 4+ months, yet they still have not reached out to me. On my Tesla app, when I click "Rear Harness Recall" button, it says "You will receive a notification in your Tesla App when parts are available for your vehicle." It is difficult to understand that it takes over a year to put in a simple cable harness.

Cabin heating unit failure during winter with temperatures in the 10-20F range, loss of front window defrosting/defogging leading to poor visibility. Problem was confirmed by dealer and heating unit replaced at dealer service center, dealer now has possession of the broken heating unit. There were no indications that the unit was about to fail, until it stopped making hot air and reported a "climate system fault" when trying to select heat/defrost, it stopped working while the car was in use. The heating system stopped working around 12:30 on Friday and did not work all day, tried rebooting the head-end computer to no effect. Started working at 9am the next morning for a few hours, but stopped working while driving around 12:30 again and didn't work for rest of day, worked for an hour or so the next day and again an hour or so the day after that. The vendor...

While slowly backing out of a parking space, I tapped the bumper of another vehicle in the space directly behind mine, causing some damage to the bumpers of both cars. The backup camera on my vehicle was not functioning at the time, making it difficult to see. I have attached a screen shot of the Tesla's display immediately after the accident. You can see the blank feed from the backup camera (there is a reflection of the vehicle next to mine). I have had intermittent problems with the backup camera showing as black on the screen (except for the two lines indicating the direction of the vehicle). Tesla initiated a recall in December 2021. see https://www.tesla.com/support/model-3-trunk-lid-harness-retrofit for details. Every time on my Tesla phone app about this recall, it says, "you do not need to request an appointment at this time. You will receive a notification in your Tesla App...

The contact owns a 2018 Tesla Model 3. The contact received notification of NHTSA Campaign Number: 21V00D000 (Electrical System, Visibility, Back Over Prevention) however, the parts to do the recall repair were not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

One lovely frigid winter day, my son woke up really ill. We had to take him to the hospital, which is roughly 30 min from our house. In our rush, we didn't grab hardly anything to bring with us. Just a small blanket for him so that we could get out the door. Once we got in the car, we got the lovely "Climate control unavailable due to system fault" error. We have not had heat since. Our son who is only 10 months old had to be driven back and forth in our car. It was only 30 degrees outside, and basically the exact same temp in the car. We had seat heaters, he did not. It was bad. Fast forward, we put in a service request. I started researching the issue and realized this is a widespread issue.We couldn't use our defroster at all either which is a...

Front wiring harness corrodes causing steering control to corrode. This also affects lane keep, braking, and speed control. At least 6 warnings associated with the short circuit

Water/liquid entering cabin from behind glovebox. Potentially affecting computer and other electronics. Also could affect the AC system and its intake air filtering. Possibly adding mold growth due to the excess moisture entering from the outside. When it rains, the water will gush through into the front passenger’s feet on occasion. This is possibly from pooling water in the intake within the front trunk. When activating the air conditioning in the car after sitting in the rain, it will spill over into the front passenger’s mat. This issue could additionally damage the floor with rust over time if a weather proof mat is not in place. Tesla Service will charge the customer when out of warranty, even though this is an issue that should not occur in any vehicle. Thank you. P.S. photos of puddling water taken from a video made during the occurrence of the issue

Our heater stopped working in very low temperatures . Upon researching, this is a huge problem in cold climates which could be extremely dangerous. Tesla has recalled Tesla cars with heat pumps. This is not just an issue for new models and is an issue in older models as well. It appears this issue may have occurred because of a software update pushed out to fix newer cars Tesla’s with a heat pump. This update is potentially causing the heater in the older Tesla’s without heat pumps to break. Therefore, when the older cars are breaking, in order to stay warm in cold temps Tesla owners are paying $1200+ to fix their heaters due to a pure Tesla issue. We had no warning. Our heat went out. My son was ill with RSV and in fact we were bringing him to the hospital. It was 30 degrees in our car....

The contact owns a 2018 Tesla Model 3. The contact stated that upon starting the vehicle, a Service Warning message was displayed. The contact stated that the driver’s side front restraint system fault warning light was illuminated. The manufacturer was notified of failure through the Tesla app and instructed the contact to take the vehicle to the nearest Tesla Service Center for assistance. The vehicle was not diagnosed or repaired. The failure mileage was approximately 20,000.

The AC compressor failed which can be caused by over delivery of electrical power to the compressor causing premature failure. I’m concerned this could also lead to a fire.