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2018 Tesla Model 3 electrical complaints
Page 2 of 7: complaints 11 to 40 of 168, newest first, as owners wrote them.
The center display (Vehicle Pad) on my 2018 Tesla Model 3 went completely blank while driving. This eliminated access to all vital driving information including the speedometer, gear selection, and safety indicators. Safety Concern: Without visible speed data and wipers the vehicle cannot be operated safely or legally. I attempted to reboot the system and power cycle the vehicle but the screen still failed.
No warning messages at all, all cameras/sensors stopped working all at once while driving, full self drive stopped working, lane assist, safety features of full self drive was degraded by this. Car software v12 (2024.44.25.2 288ce84bb43e), according to the dealership the computer fried randomly.
The contact owns a 2018 Tesla Model 3. The contact stated that when the vehicle was started, the GPS failed to function as intended. In addition, the “Unable to Charge” warning light was illuminated. The contact stated that the GPS provided incorrect directions. The contact attempted to recharge the battery; however, the battery failed to charge. The contact stated that the failure had occurred the following day after an over-the-air software update was performed. The dealer was made aware of the failure. The contact was informed that the battery needed to be replaced. The vehicle was not repaired. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. In addition, the contact referenced a document that stated that the battery life should last 200,000 to 300,000 miles. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 106,884.
I believe my car should be included in the recall for trunk harness recall. My alert and issue is the rear camera being off due to rear trunk ruining the wiring harness that has affected many cars. This is already a recall but I believe my car missed being involved.
The contact owns a 2018 Tesla Model 3. The contact stated that while driving 60 MPH with the Self Driving feature activated, the vehicle failed to slow down while approaching oncoming traffic. The vehicle accelerated and drove around the traffic. The contact depressed the brake pedal and touched the steering wheel to disable the Self Driving feature, but the vehicle failed to respond. The contact stated that once the vehicle passed through traffic, the brake pedal was depressed again, and the Self Driving feature was deactivated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was 55,866.
Main incident: Time: 2025-08-28 ~12:41 PM PST What happened: After searching for a parking space, the driver was preparing to reverse into the spot, the driver pressed up the stalk to shift the gear into reverse, a sound was heard and something showed up on the screen, the vehicle once again started accelerating and running forward suddenly and sharply (3 mph to 28 mph in 3 secs), driver tried to steer the vehicle away from cars and buildings to minimize danger, the car rushed onto a concrete curb, hit one blue Tesla, then hit the side of a concrete utility pole, and ran over a plant and last crashed into the chain-link french before it finally stops Injuries: * Spine pain for one passenger Damages: ** All tires blown out, tire falls off ** Severe damages throughout the vehicle body * One Tesla parked on the parking lot was severely damaged * The utility pole's base box was scraped and deformed * One plant was knocked down Similar case 3 few mins ago: Time: 2025-08-28 ~12:38 PM PST What happened: The driver entered a oneway parking lot, but found no available spot and was trying to back up, the vehicle suddenly accelerated on its own. The driver performed an emergency brake and stopped the vehicle. At the time the vehicle stopped, it was only about 20 inches away from two cars in front of it Injuries and damages: None What component or system failed or malfunctioned, and is it available for inspection upon request? Malfunctioning of the electronic control or braking system leading to abnormal acceleration Conflicting gear shifting and autopilot engagement design The right stalk is used to both shift gears and engage autopilot features, this design makes it very easy for the system to confuse the two actions Autopilot feature safety issues Autopilot features (whether its FSD or cruise control) should not be allowed to initiate abrupt acceleration to a dangerous speed in a low speed area (for example parking lot) Insurance claim filed, number: 25-647243342
Tesla failed to properly diagnose a high-voltage battery isolation fault in my 2018 Model 3. Despite safety-critical BMS_a027 and BMS_a142 faults indicating multiple isolation failures, they skipped required insulation resistance testing, falsely blamed sand in a connector, and charged me $174.95. After the issue returned, they reversed course, replaced an internal battery contactor, and reduced the $1,173 estimate to $356—admitting fault without owning it. Days later, a diagnostic showed dangerously low isolation resistance (380kΩ, far below Tesla's 1,000kΩ safety threshold), yet they took no further action. On July 12, the car again went into limp mode. Tesla’s repeated failure to follow safety protocols, diagnose accurately, and honor warranty obligations has left me with a vehicle in an unsafe state and no corporate accountability. I've contacted their Resolutions team three times (7/2, 7/7, 7/10) with zero response.
My brake lines began to leak. When I took the car to the Tesla Service center they repaired the brake lines, but in the process they found that the brake fluid had leaked in/on the battery compartment. Furthermore, they found a coolant leak that also leaked on/in the battery compartment. This cause a hole to develop into the battery compartment. Having the coolant and brake lines in a place that could affect the batteries is a significant design flaw of the Model 3. According to the technician from Tesla, my car/batteries, were a ticking time bomb and could have ignited at any point. I am very fortunate that a fire was not started with myself or my family in the car. I believe Tesla needs to make all Model 3 owners aware of this possibility and come up with a way to remedy this flaw before someone looses a life. If the brake lines on my car hadn't sprung a leak, I'm not sure I would have know about the coolant leak until it was too late.
This is a large scale problem with Tesla due to their "easy entry" which automatically moves the front seats to fit the drivers saved positions. Due to Tesla not properly securing the wires under the seat, they get crimped over time causing an error of "safety restraint system issue." There have been thousands of reported Teslas with a simple Google search. The service center also stated to me this is a large scale issue but a recall has not been issued. This is very dangerous as this disables the airbags due to a seat belt or wire crimp under the seat issue. Please investigate and issue a mandatory recall for the safety issue as Tesla wants $1000 to rectify the issue. Many have reported this issue to be fixed by the service center multiple times only to come back months later.
I just traded in my vehicle for a Tesla from 3rd party dealership on [XXX] A light came on once I reached my home. I called right away before the dealership closed but no one answered. So I took it upon myself to make a service call to Tesla to get my vehicle checked come to find out my vehicle has extensive damages from my unit drive, my subframe and the battery pack is severe punctures and needs to be replaced. Choice Automotive LLC in Honolulu Hawaii didn’t disclose anything to me before purchasing this vehicle. also they didn’t disclose that this vehicle was in a car accident, but they carried on with the sale. I have pictures of what needs to be repaired. Tesla said, I will need $20,000 to repair these damages. So I’m trying to take legal action against Choice Automotive LLC for selling me a vehicle that needs a lot of repair to drive normal again. I need them to pay for these repairs immediately. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My 2018 Model 3 recently started experiencing issues during AC charging where I’m only able to use 16A out of the 48A available from my Tesla mobile connector charger at home. The specific error warning and error I’m seeing says “PCS_a019 Power grid or vehicle issue limiting AC charging Unplug and retry/ Try different charging location”. Before this started happening I’ve been charging with the same charging setup at home since 2019 and have been getting 32A consistently. I’ve tried the following options to diagnose the issue: 1. I’ve unplug and replug mobile charger from the connector. (the end plug to the mobile charger), I’ve also plug and unplug connector to the nema 14-50 receptacle. 1. The mobile connector exterior shows a constant flowing of green color on the “TESLA” letters outside the charger 2. I also separately own a second 2023 Model Y Performance, my Model Y is able to use the same Tesla mobile charger connector/receptacle at my home. It it getting AC charging at 32A 3. I’ve also tried charging the 2018 Model 3 (w/ the issue) at another separate AC charging station from a friend’s house that can normally deliver 48A, but I’m still also only getting 16A out of the possible 48A After sending the above to Tesla service center, they remotely diagnose and stated that it was an partial failure/issue with the " Power Conversion System" on the vehicle. However, Tesla mentions that is is not covered by their "HV Battery Warranty" and only covered by their 4 year 50k miles Basica vehicle warranty. My particular vehicle has only 37k miles on the odometer but it exceeded the 4 year period so I'm out of warranty. However I found that my vehicle fits the criteria for this outstanding the federal safety agency bulletin notice (SB-18-16-011) [XXX] , which also specifically mentioned "Replace Reworked Power Conversion System". My vehicle meets the criteria ( manufactured [XXX]) but Tesla refused to honor the bulletin. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
1. PTC Heater, old part is available for inspection 2. PTC heater failed while driving, experienced loss of power and slow loss of secondary electrical systems (the 12v battery was not able to recharge itself with the PTC heater not functioning). When attempting to restart car after pulling into a parking lot, the entire car died (12V battery was drained so it couldn't start up) and had to get towed to Tesla service center. PTC heater is critical for car to operate as it is closely linked to 12V battery. Additionally, without PTC heater car cannot defog windshield, resulting in potentially poor visibility. 3. Dealer replaced the defective part (PTC heater) and had to replace 12V battery as well. Was not covered under warranty and I had to pay the cost out of pocket. 4. Inspected by manufacturer and replaced. 5. Got warning signs about reduced power available, and secondary electrical features were limited.
1. The Power Conversion System (PCS), still in the vehicle and not available for inspection 2. 2 of the 3 controllers have failed, resulting in limited AC charging (16A out of 48A max). The PCS helps regulate AC and DC electricity and connects the 12V batter to the HV battery. If it fails, it could lead to dangerous situations since the electricity from the HV battery wouldn't be as controlled. I'm worried that if the final controller fails while driving it could lead to a loss of power. 3. Problem throws an error code when charging that the dealer has verified, they will not replace it unless I pay for the part+labor which is roughly $1,800. 4. Vehicle inspected by dealer, they will only fix if I pay for replacement part. 5. Car has warning message when charging.
RCM_a021 alert: Front left safety restraint system fault. Seems like an issue caused by seat movement back & forth.
Power Coversion System (PCS) failed on vehicle Causing issues with charging No User facing errors to alert of issues prior to problem (hidden in service menu) - preventing owners from claiming under basic 50k mile warranty. Stated as not part of HV Battery warranty and replacement is ~$2000 Advised to replace or could leave car unusable.
Warning message appeared on center screen stating: "Front left safety restraint system fault". This appears to be a safety related problem , Tesla dealer wants $500 to repair because the vehicle is "out of warreanty" . This is the second Model 3 we have had. Previous version also experienced this fault. Is this a safety problem and if so should the car manufacturer be responsible to repair at no cost to owner? I have receoved a notice from the federal safety agency dated 5-31-2024 stating recall 24V376 may affect my vehicle - Seat Belt warning Sustem. I have not receoved a specific recall from tesla for this recall. Is it the same as the fault referenced above?
Passenger Safety Restraint system fault. Faulty wiring under the seat. Cost of repair is $1000. Passenger airbag requires replacement.
I’m not exactly sure what’s wrong, the screen keeps failing on my car. It’s been taken to Tesla to service this issue 4 times. With the most expensive repair costing $2,200. Its poses a safety hazard because when the screen fails. You can’t see anything, speed, gear. You can’t adjust windshield wipers, seat or mirror positions.
Power conversion system (PSC) failure. Only charges at 16 amps. I know other Tesla owners have had this problem as well.
1. I had my car for only 6 years, and the main monitor would randomly go black. I have to do multiple hard resets to get it to work again. 2. I'm getting a Front left safety restrain system fault, on a car that I had only for 6 years. Compared to my Prius that I had more than 10 years, which I had no problems AT ALL, Tesla is junk. 3. Front suspension is squeaking when making turns at slow speeds. Review of YouTube indicates that this is a very common problem. Tesla should fix this for free instead of charging $800.
ISSUE: PTC Heater failed at 63,617 miles after 6 years of use WARNING MESSAGE: "Vehicle may not restart" CONTACT: [XXX] [XXX] main contact for owner [XXX] . VIN: [XXX] MAKE: MODEL 3 YEAR: 2018 REPAIR QUOTED: $1,104.18 LINE ITEMS: PTC HEATER DUALZONE(1088218-00-I) HVAC, PTC SERVICEASSY(1107677-00-A) LABOR & DIAGNOSTICS SUMMARY: TESLA Model 3 Electric Vehicle shut down into "Asleep mode" and will not respond (turn back on). Locked out. Will not wake up. Will not respond to software nor car keys. All systems turned off. Will not charge. Will not release charger from charge port. Issue suddenly happened after [XXX] software load (deemed to not be the cause of issue). Dealership diagnostic shows PTC Heater failure which cuts off the battery. Dealership quoted estimated repair (see below). This could have happened while driving causing the vehicle to be uncontrollable, and a major safety issue. Fortunately, my incident happened after I parked the car in the garage. Overnight there was a software install (supposedly not causing the problem). In the morning the vehicle would not turn on. PRECEDENT: There were several small claims filings in Canada for same issue. This was deemed a design flaw, and safety issue. (See [XXX] ) DIAGNOSTICS: On-line debugging is pointing to resistance issue with 1 of the 5 heating elements in the PTC Heater. PTC Heater cuts off supply to PCS which charges the 12V battery when there is an issue with the heater. This allows the 12v battery to drain, and the EV becomes unresponsive. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Recall never completed for my car. Was from 2021. Worried that rear camera may fail and create a dangerous situation.
Seems that when brake pedal sensor can trigger a "pressed" reading when not actually being pressed. The only way to turn off the car manually is defeated by, you guessed it, depressing the brake pedal. This causes the vehicle to remain on and unlocked. Even if you are able to leave the vehicle in a locked park state, at any point, the sensor can register a "pressed" reading and essentially unlock and turn on the vehicle. I see this as a extremely serious safety issue. The issue seems to occur randomly at first and then more frequently. It can be confused with a known seat sensor issue which seems to also cause the same symptoms.
Tesla model 3 Power Conversion System failure which will now limit the car charging to 16 amps (half the normal charge rate). This is a common failure which should be recalled
The car's horn has stopped working. A car was entering my lane almost running me off the road and I could not alert the other driver because the horn wouldn't work. The car has not been inspected by the dealer, police or insurance yet. I received no warning lights or messages before the failure. problem was recognized on 8/30/24. This seems to be a known issue that Tesla has not addressed. Estimate they have given for repairs is $195.00
RCM_a021 Front left safety restraint system fault RCM_a056 Front passenger safety restraint system fault I have been noticing this error on my Tesla Model 3. Also, I researched on it and found out numerous people are having same problem. So, since it’s safety related issue there should be recall to fix it.
getting a "front left safety restraint fault" warning when moving the driver seat...is a known issue in tesla forums where the seat wiring harness is not secured properly and either a wire is crimped by the seat mechanicals or a wiring harness is pulled loose...
Starting Jun 15 2024 an error came up saying "Left Restraint System fault" after a remote software update for Model 3 2018 Tesla The Alert comes up intermittently & Tesla requires $359.50 to change First Row Seat Harness Assembly - Left
The contact owns a 2018 Tesla Model 3. The contact stated that while driving at various speeds, the vehicle independently accelerated with an unknown message displayed on the Phone APP but not on the instrument panel. The contact also stated that a screw had detached from the undercarriage which resulted in an abnormal, squeaking noise coming from the vehicle while driving at various speeds. Additionally, the contact also stated that the automatic walk-away lock feature intermittently failed to operate as needed; as a result, the vehicle remained unlocked while away from the vehicle. The vehicle had been taken to a Service Center for repair; however, the failures persisted. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was unknown.
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