5 hours ago, anenezic said:

After reading all of the comments, I also decided to elaborate on the topic, and to see if there is some kind of update regarding this issue with Octavia MK4 model.

Basically, after buying as used car sometime in September 2024, car started increasing volume, restarting Infotainment system, and one day after work my wife could not start the car (some people from work told her that car was playing music on max volume for quite a while, so this is how we found out that it started Multimedia on its own). Battey drained completely so it needed to be changed. I got to a authorized service and they gave me replacement MMI, “which didn’t have that issue”, to test it some days. After no issues for 9-10 days, they ordered new MMI.

Infotainment display was changed sometime in December 2024 and I had no issues until 2 months ago, when after washing my car, volume started increasing again on its own. It was random, like previous time, but this time I didn’t have issue with MMI restarts nor starting MMI while car engine is not running - only volume up issue. Volume bar below the display was not changed at all.

Since I was still in warranty period of previous replacement, I contacted Skoda and they ordered a new Infotainment display - only asked for video as proof to factory. I sent it, and no additional questions asked (kuddos for that). Month later, new MMI came and I got a call to get it replaced (in the meantime, I didn’t experience any issue for a month! Nevertheless, I got it changed, and moved on as usual.

Couple of days ago, I went for a short vacation and left the car at the airport parking lot - and you imagine the stress of car not recognizing the key… Then, I thought it was the battery. But the key was giving a red light when pressing the buttons.

Anyway, 2 hours later, found somebody to start my car with cables and it got me going (Start/Stop option was not available, and bunch of yellow signs, but could be driven - 3 hours ride, no sign of volume, or any similar thing).

Since it’s weekend, I still didn’t have a chance to get it diagnosed in the Skoda service, however I wanted to write the post for all, due to the fact that my new MMI is actually H49, praised by some of you. I hoped it was not H49 - as this seemed like light at the end of the tunnel, but after checking, my new Infotainment replaced a month ago is H49 (picture attached).

Are there any news or developments, or any device that some of you might have?

PS. I suppose I will need to change the battery, but I managed to start the car with the same battery 3-4 times this morning.

The last issue you had sounds more like a bad/old battery problem. I'am still holding on H49 no problems so far (1yr since replacement).

Keep monitoring the issue.

My System started acting up on the volume/power sensor as well today when i went to work.

Fun ride to work constantly fighting the screen turning itself off and on again the entire trip. When i came back home everything was normal...

I might have to disassemble it to clean with isopropyl alcohol soon

Edited 26 May26 May by Jack_Dangerous

8 minutes ago, Jack_Dangerous said:

My System started acting up on the volume/power sensor as well today when i went to work.

Fun ride to work constantly fighting the screen turning itself off and on again the entire trip. When i came back home everything was normal...

I might have to disassemble it to clean with isopropyl alcohol soon

Hello, I advise you to use a glasses cleaning cloth to avoid leaving any residue.

On 26/05/2026 at 08:45, maxxouu88 said:

Hello, I advise you to use a glasses cleaning cloth to avoid leaving any residue.

I did, with cotton swabs for the edges, i already reassembled everything and it seems to be working fine, i have to keep checking at night as well when it gets colder. I did turn on the AC with the car running on full cold and it didn't do any ghost touches like it did before.

It was a fun day though, was going out for lunch and the car wouldn't start because the battery was low on charge, jumped started the car with my dad's car, the battery charged fine, held charge fine, went to a car shop 30 minutes away, they diagnosed the battery and said the report came out completely fine, so i'm pretty sure it was the infotainment turning on and off during the night and day while the car was parked with the AC and everything. It has to be this because i've noticed that since the power button started acting up, the car wouldn't auto-unlock when i put my hand on the door handle when it was parked for a day.

Today was pretty eventful but i hope the problems are over... Kinda wild how it took 5 years for the power button to start going crazy, must have been humidity from the severe winter rains we had

@omeromeryigit

Hi Omer,

I have exactly the same issue. I took the car to the dealer and they told me the screen needs to be replaced. Unfortunately my car is a 2023 model and the warranty has already expired, so I don’t think they’ll cover it.

I’d like to try cleaning the touch bar with IPA myself before spending money on a new screen, but I’ve never taken one of these apart before.

I tried sending you a PM, but the forum won’t let me because I don’t have enough posts yet. Is there any way I could contact you? Either through PM or any other channel you prefer.

Edited 4 June4 Jun by mertpolat

👍

Edited 4 June4 Jun by omeromeryigit

My car's a 2021 model with the H44 head unit and I've had the same problem recently, which started during the high temperatures the other week. It started with the head unit rebooting itself as if someone was pressing the power button, and then the volume started turning itself up. From then on the head unit would just constantly reboot itself, making clicking sounds as if someone was pressing the buttons. It’s quite distracting and arguably a safety issue, with the volume suddenly blasting out and the screen flickering on and off while driving

I tried cleaning the underside of the volume bar, but this didn't fix the issue. I've had to unplug the volume bar from the head unit, as others have suggested, which of course "fixes" the problem, but it's obviously not a perfect solution.

It's really not right that all these relatively new cars are failing in the same way. It shouldn't be down to owners to fund repairs for what appears to be a widespread hardware defect.

@omeromeryigit

Thanks for the information you shared. I followed the steps in the post one by one, and in the end my volume increasing issue was fixed. I solved the problem by cleaning the unit that the service said had to be replaced completely.

Edited 6 June6 Jun by mertpolat

I have started getting this problem the last two days volume going up by itself

And randomly turning offf and on

2023 VRS

4 hours ago, Andy585 said:

I have started getting this problem the last two days volume going up by itself

And randomly turning offf and on

2023 VRS

Hello, Was the car parked in the sun?

There is also an impact due to the heat in the car

44 minutes ago, maxxouu88 said:

Hello, Was the car parked in the sun?

There is also an impact due to the heat in the car

No heat here in Scotland maybe 21c max

7 minutes ago, Andy585 said:

No heat here in Scotland maybe 21c max

Okay, we should try to clean it

Still working for me after this cleaning, no problem with the heat from the last days 👍🏻

4 hours ago, Valentin said:

Still working for me after this cleaning, no problem with the heat from the last days 👍🏻

Same here.

Potential Root Cause(AI generated based on the information and investigation):

Finding that the left corner of the Flexible Printed Circuit (FPC) had delaminated (un-glued) from the plastic front lens perfectly explains the random behavior.

In capacitive touch systems, the sensor relies on a uniform dielectric layer between the copper traces and your finger. When that FPC lifts, it introduces a variable air gap. Because air has a completely different dielectric property than plastic or adhesive, any change in cabin temperature, vehicle vibration, or humidity causes the capacitance to swing wildly, triggering those annoying "ghost touches."

To secure your repair and prevent the FPC from lifting again under the intense heat of a summer dashboard, you need an automotive-grade solution.

The Professional Solution: Kapton (Polyimide) Tape

The best technical solution to overlay and seal the back of that FPC is Kapton Tape (Genuine Polyimide tape).

• Excellent Temperature Resistance: It easily handles continuous temperatures up to 260°C (and short terms higher). Dashboard components can easily exceed 70°C–80°C in direct sunlight; standard tape will melt, slide, and leave a sticky residue.

• Low Static / High Dielectric Strength: It is an exceptional electrical insulator and does not build up or retain static charges that could interfere with the capacitive sensing traces underneath.

• Ultra-Thin Profile: Looking at your layout, the green main PCB with the LEDs sits incredibly close to the black trim piece when clipped back together. Kapton tape is incredibly thin (usually around 0.05mm), meaning it won't add bulk or create mechanical pressure points against the LEDs or components on the green board.

How to apply it:

1. Cut a piece of Kapton tape wide enough to cover the lifted corner and extend slightly onto the solid plastic frame.

2. Use a plastic spudger or your thumb to press it down firmly from the center outward to ensure zero air bubbles are trapped between the FPC and the plastic housing.

3. Seal the outer edges of the FPC completely to prevent future moisture or cleaning sprays from creeping under the circuit.

What to Avoid

• Standard Office/Packing Tape (Cellophane/BOPP): Do not use this. It degrades quickly under heat, the adhesive dries out rapidly, and the act of unrolling/applying it generates massive static electricity (ESD) which can glitch or permanently damage the sensitive touch controller inputs.

• Thick Foam Tapes: Avoid thick double-sided foam tapes on the back face. They can compress unevenly and push back against the green PCB, potentially flexing the main board or cracking solder joints over time.

Edited Monday at 13:211 day by djmartzian