6.5

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
10,806 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2018 Audi Q5 electrical problems

electrical problem

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2018 Audi Q5 Owner Comments (Page 2 of 3)

« Read the previous 20 complaints

problem #32

Sep 252023

Q5

  • miles

A D V E R T I S E M E N T S

Comfort Control Module (J393) is malfunctioning due to water getting into the wiring components and surrounding areas. The rear lighting stops working all together; No taillights, no brake lights, no turn signals, no license plate lights, and no lights when backing up. The problem has been reproduced by an authorized dealer. The component was removed by the dealer and noted of water inside the module and corrosion on the pins/ internals because of the water. The warning lamps occurred at the same time the lights stopped working. There was never any "prior to" warning. The warnings disappear randomly, no set time until they cleared. I am assuming once the module dries out over time is when the warnings start to clear but that is just speculation. UNKNOWN cause of the incident, but water is getting into the inside of the car somehow.

- Queensbury, NY, USA

problem #31

Sep 202023

Q5

  • miles
Start/ Stop system malfunction shown on dash board. Took vehicle to Lynbrook Audi New York on 9/20/23. Water penetration causing multiple damage to electrical systems. Audi states water possibly entering through faulty skylight drain hose ? Quote service charge of $12,028 not including tax, declined service for a second opinion. Invoice # 207805. Paid $271.57 for diagnostic inspection. Vehicle was service at this location on 3/9/22 RO # 188998 Tag w107 Complete Complimentary Inspection on 3/9/22. Vehicle Certified ( pre-owned ) at this location on 12/20/2020 ( paid over 1,000.00)

- Hewlett, NY, USA

problem #30

Sep 212023

Q5

  • miles
Control modules located next to the gateway module that was recently recalled are getting wet and shorting out. Tail lights, brake lights, turning signals, license plate lights, and reverse lights all stop working. Once the area is dry, the lighting works only sometimes. I am not ever sure if the lights work or not while I'm driving and am concerned about getting rear-ended because of the lights being out and me not knowing.

- Queensbury , NY, USA

problem #29

Aug 182023

Q5

  • 72,000 miles

A D V E R T I S E M E N T S

The contact owns a 2018 Audi Q5. The contact stated that while driving his vehicle, a start/stop malfunction warning message appeared on the display screen. Once the contact made it to his destination, the vehicle failed to turn off after repeatedly pushing the start/stop button. The next day, the failure persisted and the vehicle was taken to a dealer where a diagnostic was performed. The diagnostic showed that water had traveled from the sun roof drains into the rear left panel and into the vehicle's wiring module. The manufacturer was notified of the failure and informed him that there were no recalls on the vehicle. The vehicle had yet to be repaired. The failure mileage was approximately 72,000.

- Chicago, IL, USA

problem #28

Sep 062023

Q5

  • miles
My 2018 Q5 has experienced water intrusion due to the defective design of the sunroof/drainage system, causing water to leak into the trunk and rear left cavity where the ECM and battery are located. After several hours of rain, approx. 2 inches was collected in the location of the battery and was extremely dangerous.

- New Orleans, LA, USA

problem #27

Aug 142023

Q5

  • miles
Warning lights on the dash began to light up about a minute after starting and driving the car. Pulled over, stopped the car and tried to restart but couldn't restart. Apparently water leaked in from the closed sunroof over night and flooded the spare tire well where a control module is located and shorted. Car was serviced by Audi as recommended during the entire time. Had to have the car towed to an Audi dealer and was charged $1,600 to correct after 10 days.

- Southampton, NY, USA

problem #26

Aug 302023

Q5

  • miles

A D V E R T I S E M E N T S

Audi engine start system malfunction continues to go off on the dash and the majority of the exterior lighting has gone into a malfunction as well. The left rear fuse panel in the luggage compartment has moisture in it and on the wires.

- Queensbury , NY, USA

problem #25

Aug 082023

Q5

  • miles
On 8/8/2023 my vehicle was outside in the driveway of our home in Truro, MA. A large storm moved through the area with torrential rain and lightning. Once the rain let up I looked out the window to find all 4 windows down 4-6 inches, the rear hatch was opened with the rear wiper and high middle brake light on. When I ran outside to close the windows etc. I could not start the car the MMI did not come on and I could only get 3 of the windows up. I had to manually close the rear hatch. I put a tarp over the drivers side window that wouldn't close and had AAA come out. They assessed that it was not a battery issue bit an electrical module issue. I filed a claim with my Insurance and after waiting for the adjuster to look at the car I had AAA tow it to an Audi Dealership. They ran a diagnostic test on it and found water had caused the Comfort Module and associated wiring to fail. The estimate to fix the issues was is nearly $12,000. Because of the cost my insurance company is sending another adjuster out to inspect the issues at the dealership. There were no prior issues or symptoms before this issue took place.

- Boston, MA, USA

problem #24

Jul 292023

Q5

  • miles
The comfort control module catastrophically failed. There is video evidence of the condition the module is in. The whole car shut down. Nothing electronic worked. Doors unlocked, trunk opened, gas cap unlocked, couldn't start car or change gears, roll up/down windows, or lock the doors. The dealership has confirmed the sunroof drains leaked water into the rear left wheel well filling it up with water into the trunk where the spare wheel well is with picture evidence of the amount of water. It rained the night prior. There were no prior warning signs or any issues. Everything was working fine until it was not. The comfort control module needs to be completely rewired and the sunroof drains need to be completely replaces. If this happened while I was driving I would have lost complete control of the vehicle as all power to the car was off.

- Land O Lakes, FL, USA

problem #23

Jul 022023

Q5

  • miles
In early July, 2023 various warning and fault lights began to show on the dashboard: engine start system, brake lights, start/stop system, and others - indicating malfunctions with systems important to safety. Also, the car alarm system sounded without cause and key pods would not lock/unlock the doors electronically. These warning lights proliferated over several days. We took our car into our local Audi dealership. They diagnosed the problem as follows: "Performed GFF and found code for 3393 comfort system control module replacement. Control module faulty due to control unit being submerged in water and fried the control unit. Water leak due to rear drains clogged causing the water to overflow. Performed/fixed the water leak, cleaned out the pools of water that have accumulated, replaced the control unit 3393 comfort system control module, performed control unit replacement test plan and program keys." The Audi Q5 is well known to have design/parts problems in the sunroof drainage system. As has occurred in thousands of other Q5s, those issues caused the rear cargo area to flood, frying an important electronic component and activating warning/fault lights for a range of other systems. Malfunctions in several of those systems could have caused critical safety issues. We are fortunate because we decided to take our Audi directly to the dealership service center. Repairs cost several thousand dollars.

- Falls Church, VA, USA

problem #22

Jul 062023

Q5

  • miles

A D V E R T I S E M E N T S

Regarding my 2018 Audi Q5 34000 miles. Driving on a busy highway a few ounces of water spilled in the backseat. Car lights up like a xmas tree and car came to a screeching stop. Two lanes of high speed traffic on both sides. Fiance just had both hips replaced, Ends up popping one of them out of socket during ordeal. Recall was issued for installation of 'protective cover' over gateway control module. Car received recall work. Part still failed. Audi won't cover the part. I'm out of warranty. Total bill $1800. Dealer has had car 3 weeks. I've been out of pocket for rental car

- Kenedy, TX, USA

problem #21

Jun 182023

Q5

  • miles
The sunroof draining is designed in such a way that if the holes get clogged, the water can back up and flood the comfort control module in the rear of the car rendering it useless. That module controls critical parts of the driving of the car like turn signals, the on/off starter motor, which if they fail while on the road make it incredibly dangerous to drive. Audi has already recalled the car to "enclose" the gateway control module but refuses to take responsibility for damage to the comfort control module caused by badly designed sunroof drainage. This incident caused a $9,000 repair that they refused to pay for.

- Tampa, FL, USA

problem #20

May 162023

Q5 4-cyl

  • miles
THIS VEHICLE HAS ELECTRICAL ISSUES. THIS VEHICLE WATERPUMP FAILED TWICE WHICH I HAD TO REPAIR THIS VEHICLE GIVES WARNING SIGN-??DRIVE SYSTEM MALFUCTION-?? CODES DIRECTING TO TURBO CHARGER BUT IT IS ACTUALLY THE WASTEGATE THATS THE ISSUE-WHICH I HAD REPLACED AFTER THROWING A NEW TURBO. THIS VEHICLE HAS ISSUES WITH THERMOSTAT WHICH I HAD REPLACED TWICE. I HAVE PAYED ALL REPAIRS OUT OF POCKET AND UNTIL TODAY THERE IS NO RECALL.SOMEONE PLEASE TAKE A LOOK INTO THIS MATTER ANY INFORMATION NEEDED FROM ME OR MY MECHANIC I CAN BE CONTACTED VIA EMAIL -: [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Albany , NY, USA

problem #19

May 012023

Q5

  • miles
The car is totalled. My car tripped 9+ malfunction warnings, after starting and driving. These included rear brake lights, directionals, start/stop system, and more. It appears that the sunroof leaks, and the roof drains were clogged (even though they were specifically checked and cleaned by the dealer 2 months earlier). This led to water accumulating in the areas under the back seat (a prior recall which allegedly had been addressed...NHTSA campaign number: 21V947000. Audi-??s number for this recall is 90S9.), and in the rear wheel well area, where electronics control modules live. The car eventually had to be towed to the dealer. It was initially estimated to cost $9,500 to repair. But, after several weeks, more water was found and it was declared not worth repairing.

- Newburyport, MA, USA

problem #18

Apr 292023

Q5 4-cyl

  • 53,000 miles
The contact owns a 2018 Audi Q5. The contact stated that while starting the vehicle in a severe rainstorm, the vehicle experienced electrical failures, which included the head lights flashing and the horn activating before the vehicle suddenly became inoperable. The vehicle was towed to the local dealer who discovered that rainwater had leaked into the rear of the vehicle and the electrical components were submerged in water causing an electrical failure. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact stated that the vehicle was previously serviced under the NHTSA Campaign Number: 21V947000 (Electrical System, Structure). The failure mileage was 53,000.

- Flushing, NY, USA

problem #17

Apr 202023

Q5

  • miles
My 2018 Audi Q5 has a water intrusion issue with control module damage. The vehicle reduce speed to 15 mph on the highway, when parked the lights would not shut off. The vehicle would then not turn on. Thirty minutes later the vehicle started. I received a front passenger seatbelt malfunction and several controls went out. The passenger seatbelt would not recognize there was a passenger buckled in the seat. The lights stayed on. The windshield wipers started on their own. The car wouldn-??t recognize the key fob. Later the turn signal malfunctioned, along with the front lights staying on but the rear light and license plate light would not come on. At the dealership they found water in the comfort module housing, left rear quarter panel/wheelbase and said it was probably caused by the pressure vent seal allowing water to enter damaging the comfort module and 56 wires. They stated the vehicle was unsafe and inoperable. They also were not able to roll the windows back up or lock and secure my vehicle. The issues with the vehicle speed occurred 5 weeks ago. The dealership changed the thermostat but the speed reduction happened again afterwards once but when it was turned off and turned back on the speed went back to normal. Then today the vehicle just went crazy with things turning on and other controls not working, like the taillights. Multiple times I have told the dealership of the seatbelt malfunction. They said it was probably the seat detecting something on the seat, like a bag but couldn-??t account for the malfunction when the seat was occupied. The vehicle is now at the dealership with plastic taped around the opened windows and unsecured since the locking controls will not work. They suggested I file a claim with my insurance for the repair. This screams defect to me!

- Lakeland , FL, USA

problem #16

Feb 022022

Q5

  • miles
Have been receiving an intermittent warning: Safety malfunction for the passenger airbag. The light comes on intermittently. Comes on most often when no one is sitting in the front passenger seat. If I place a small bag (handbag, purse etc.) on the seat sometimes the light goes off sometimes it does not. If someone is sitting in the seat the malfunction light is not present. The dealer confirmed the malfunction stating: They found the safety malfunction light is being triggered by a faulty passenger front seat pod and needs to be replaced for $2,233. Doing a quick Audi forum search have found numerous individuals with similar complaints and many have even reached out to Audi. This appears to be a significant safety issue as it calls into question the reliability of airbag operation in the case of an accident.

- Celina, TX, USA

problem #15

Feb 142022

Q5

  • miles
On 02/14/2022. Car just died while waiting for cars to pass to turn at light. Dashboard started flasing "engine start system: malfunction! - Please contact service" then "Parking Break Malfunction!" then, "Steering: Malfunction! - You an can continue driving" Panicked because was holding up traffic. After a couple minutes trying Car then just started drove home and put on battery charger overnight. Hoping that's all it was. Next morning 02/15/2022 started right up early morning no issues to be concerned with was on highway doing approx 69 mph, drove approximately 42 miles then then while only driving 35 mph 4 lane highway. Again, No warnings, but while DRIVING Engine and steering, just shut down. Almost causing me to be reared and then hit on passanger side. I don't even want to think what could have happened had this happened on interstate or if my children were in the vehicle. It was a very dangerous and scary situation even happening while only doing 35 mph. This should be considered a MAJOR recall. Vehicle was towed on 02/16/22 to Clearwater Audi. We did not receive vehicle back until after over 9 weeks, 04/22/22. Yesterday, 06/07/2022 Sensors glitching again and being called back into dealership. I want this life threatening recall documented. There is absolutely no reason why a well cared for vehicle with less than 18,000 miles should be having these issues. We We keep losing out on time from work and driving back and forth to dealership. We need to be able to rely on the safety and integrity of this vehicle not only for the driver/passangers but for the safety of others on the road. Thank you for your time to hear our concerns

- Seminole, FL, USA

problem #14

Jul 282021

Q5

  • miles
It says driver system malfunction. Day before that it says Auto Start and Stop malfunction failure. When you are the traffic light and slow down and take a turn then the car gives kinds of couple of pushes as if the It gearbox is not able to adjust the speed automatically. You need to accelerate to keep the balance of the Car. Every passenger of the car feel the same. After 2 days I started getting Driver system malfunction warning. The car is not safe to drive on highways or local road as gearbox has some issues. There is a class action lawsuit for the similar problem which Audi did not address yet. https://margarianlaw.com/audi-class-action-lawsuit/

- East Brunswick , NJ, USA

problem #13

Jun 232021

Q5

  • miles
The 2nd generation Audi Q5 (roughly 2017-2021+) has a major susceptibility to immediate, catastrophic failure as evidenced from my own experience and dozens of episodes reported online. This failure typically causes a $2000-$3000 repair bill that Audi will not cover and will claim is the fault of the owner. My wife was driving the vehicle with our 5-year-old daughter in the car In the middle of the rear seat. The daughter spilled part of a 500 ml water bottle onto the seat next to her. Within 20 seconds of this happening, the car began alerting about steering malfunctions, braking malfunctions, and the windows began seizing up and down repeatedly. The car was completely inoperable. We are lucky this was on a slow city street and not on the interstate or tollway! Once stopped, we no buttons generated any actions from the vehicle. we couldn't power it on, put it into neutral to be towed away, raise the windows, or perform ANY other function at all. The car was a useless brick. We were charged $125 for the towing service and another $2200 from Audi Plano in Texas. After countless conversations, even debates, with David (director Audi Plano) and even Audi USA customer experience team, they REFUSED to admit any fault in a poor design and help cover any of the costs whatsoever, and we are even still in warranty. The part that was damaged is DIRECTLY below the cupholders and has no effective liquid protections - what did they think would happen! Here are other examples from online: https://www.audiworld.com/forums/q5-sq5-mkii-discussion-218/water-bottle-leak-%241800-damage-3009540/ https://www.audiworld.com/forums/q5-sq5-mkii-discussion-218/control-module-ruined-moisture-corrosion-3001605/page5/ https://www.mumsnet.com/Talk/shopping/3641294-Audi-Q5-taken-out-by-DD-water-spill-in-rear-seat https://www.nhtsa.gov/recalls?nhtsaId=11350209

- Plano, TX, USA

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