Hi All,

 

This forum has always been so helpful in the past that I thought I would post my issue here.

 

My 2015 Skoda Superb MKIII has developed a fault with one of the rear parking sensors. It is giving a false reading. Showing something is there when it is not. This happens when ever the car is started, but sometimes goes away and resolves itself. Sometimes it does not. It hasn't rained heavily in days and I cleaned the sensor repeatably to try and resolve the issue. No joy so far.

 

Skoda are booked out for over a month here and knowing my luck they will not be able to reproduce it. Has anyone experienced this before and if so, how was it resolved? 

 

Thanks!

 

If you contact @Johngerard (from Cork) he maybe able to assist in scanning the car with VCDS, he maybe the closest you have if he is willing to assist in scanning the car.  He can bring up any fault codes, and scan live data to view values each sensor is reading.

 

Perhaps you have a broken wire, I myself today had to swap the loom for my rear sensors.  If you have exposed wire(s) as mine had, then perhaps when it does rain they get wet and produce errors. 

Edited 5 August, 20223 yr by varooom

4 minutes ago, varooom said:

If you contact @Johngerard (from Cork) he maybe able to assist in scanning the car with VCDS, he maybe the closest you have if he is willing to assist in scanning the car.  He can bring up any fault codes, and scan live data to view values each sensor is reading.

 

Perhaps you have a broken wire, I myself today had to swap the loom for my rear sensors.  If you have exposed wire(s) as mine had, then perhaps when it does rain they get wet and produce errors. 

 

Thanks, I have an obd scanner and it's not showing any errors. I went out to the car to clean the sensor again. 

 

It didn't fix the issue, but the sensor was flashing between red, amber and nothing there. 

 

Unfortunately, I wouldn't get a chance to get to Cork anytime soon. 

 

If you did take it to a dealers, you might pay a fair whack as you can imagine.  If you have some DIY skills you might be able to swap over one sensor with another, to see if the fault shifts.  If it's a wire, then the screen will show fault in same place, if it's a sensor failing, then it will move over to the new location.

 

The fault is "permanent" right, so happens regularly then that will be good, as intermittant faults are a pain.

3 minutes ago, varooom said:

If you did take it to a dealers, you might pay a fair whack as you can imagine.  If you have some DIY skills you might be able to swap over one sensor with another, to see if the fault shifts.  If it's a wire, then the screen will show fault in same place, if it's a sensor failing, then it will move over to the new location.

 

The fault is "permanent" right, so happens regularly then that will be good, as intermittant faults are a pain.

 

It's odd. My apartment bloc has a car park so I have parked in the same place for last 6 years. Since yesterday, when I start the car the problem is consistent. Permanent false reading. 

 

However, took the car out today and the problem wasn't there. Went out tonight to check on it and the problem is back. Not sure if it's considered consistent.

 

Skoda always charge me a fortune but don't know who else to go to. Most mechanics don't seem to have good knowledge on technical issues like this and I do not have the DIY skills to fix it myself. 

Given your fault occurs each time in the same place, but not elsewhere could be a simple red herring, or could also be some EM interference at home.  Maybe it could also have worked fine when you took the car out, as the wires bounced a little and were not shorting for example.

 

Perhaps take it to an empty carpark or some open flat ground.  Get 2nd person, to sit in the car with the system activate, then get out yourself to hold up something in front of each sensor at different ranges.  Start far away from each sensor, and work closer (take a measuring tape if needed too) to get a rough idea of when they change from amber to red on screen.

 

The person inside the car should be able to communicate when the sensors activate.

 

 

These are some nice free checks you should be able to do.  Fingers crossed.

Edited 5 August, 20223 yr by varooom
Spellink

Thanks Varoom.

 

I did what you said and figured out the problem. It was a towbar cap. It wasn't on correctly and slightly hanging in the direction of the sensor. I straightened it up and the problem went away.  

Nice work, glad it's all sorted... Happy motoring!