I lost side assist and rear traffic alerts, both due to "no sensor view". This happened twice, once each on the only longish (~80 mile) drives I've done. This was back on 5/13, and since then I've only driven short distances (under 20 miles) and it hasn't happened.

Last month Perfessere reported a similar issue that was due to a mechanical fault ID.4 version 0792 Software Bug Reports...

 

I had not had this issue until this trip, but this is my first long trip. At my first visit to the dealer I will have them check it out.

 

Just picked up my Pro S this week and I started getting this error constantly. "Error: side assist and rear traffic alert". I guess I'll have to get a service appointment unless anyone's aware of a simple fix that can be done.

 

Someone on the forum said the shop found a dangling wire in front of a sensor. The shop corrected the issue and it went away. I had that error a few weeks ago on a long trip and it corrected itself. But I am making an appointment for the 30/60 check up and I am going to mention it to them.

 

I did it get it once. side assist and rear traffic alert pair issue.. it fixed itself after 30 mins driving.

 

My 1st edition reported the "Side assist and rear traffic alert are not available. No sensor view" alert several times during my 600+ mile drive from the SF Bay Area Portland OR over the July 4th weekend. Never had that error prior to my dealership/shop visit to Serramonte Volkswagen to address the recent headlight cap horizontal aim recall. Will be taking it into service dept this Friday to check it out.

 

My dealer diagnosed my issue like that to some module behind the rear bumper. But I was skeptical and am waiting until it happens again. It has not happened in the last 1700 miles. I really think it is a software issue, hopefully addressed in the next software update! I think VW rushed the ID4 into production before thoroughly testing the software.

 

Went to the dealer and my issue was a wire harness blocking the rear sensor (as another user mentioned). Service rep mentioned this was a semi common issue. Been a week since then and no issues or warnings. Here's what my service invoice stated:

WAS ADVISED TO REMOVED REAR BUMPER COVER AND INSPECT WIRING AND VIEW OF THE LANE ASSIST MODULE. IF WIRING IN PATH OF RADAR SENSOR THEN REROUTE WIRING. IF ALL IS OK THEN REPLACE MODULES. REMOVED REAR BUMPER FROM VEHICLE AND INSPECTED VEHICLE, FOUND WIRING HARNESS ON RIGHT REAR SIDE IS ROUTED DIRECTLY IN FRONT OF THE RADAR SENSOR ON RIGHT SIDE. RE ROUTED WIRING HARNESS ON BUMPER COVER TO BE OUT OF THE VIEW OF THE RIGHT RADAR SENSOR. THEN REINSTALLED BUMPER COVER ONTO VEHICLE. CLEARED ALL DIAGNOSTIC TROUBLE CODES. USING GFF RAN TEST PLAN AND PROGRAMMED LANE ASSIST MODULES AND CODES CLEARED AFTER PROGRAMMING. SAVED AND SENT THE GUIDED FAULT FINDING LOG ONLINE TO VOLKSWAGEN. THE SYSTEM IS NOW OPERATING AS DESIGNED.

 

That is almost exactly what my dealer told me at my last visit. I have more confidence now with what they told me. I think that VW knows about this problem and have sent down a directive to the dealers to be aware of it.

 

I had exactly the same problem (it occurred, coincidentally, while I was on the way to the dealer for another service issue). Although they did not tell me where the problem was, the dealer's description of the fix (rerouting wiring to avoid blocking the sensor) was exactly the same. Since then, I have had one or two very brief sensor failure alerts. In both cases, the alerts went out after a short time, without even stopping the car.

 

I had a similar problem. Went through a car wash. Fixed it. Not sure this will fix your problem. But it worked for me

 

Had the exact same thing happen on a long 1000+ mile trip. Either clears on next startup or sometimes after driving another 30 mins or so. Everyone please post any VW dealer fixes that are successful!

 

I have gone almost 4000 miles since I reported this issue and have not had it again. Just another of the ID4 glitches that self heals!

 

We had this issue twice but we haven't had any issues in over a month.

 

I have had that happen but not on a long drive.

 

I think this is an issue that VWs have had for a while. My mom has a 2020 Tiguan and she said hers will sometimes light up while on the highway and no one is there.

 

This has never happened on my RAV4.

 

Right…what I’m saying is that vw might be using the same sensors/software and the issue is more widespread than just the ID4.

 

I had same issue three times scheduled service appointment with VW dealer

 

They moved the wire bundle in on my ID.4 and have not seen the sensor unavailable message since then. Mine behaved like gorj described before.

 

I think we've seen my version of these faults yesterday. Checked both rear radars from the below of the vehicle, no wires seem to be in the way... but the dealers may have a magic to apply Did the issue disappear for everyone who had bumper cables "re-routed", please?

More info...

Got 2 intermittent Rear Cross Traffic Alert issues while during on a several hour drive on Highway (it was relatively dry, no snow/ice, around 6C), was passing a truck and yellow RTCA not available popped up. Other systems - like lane keep and ACC worked fine. Poked around with VCDS while getting electrons excited at the EA station. Tried to reset both modules, faults came immediately back on. It cleared itself during driving, then it came back again and then it cleared again... I did check the sides of the rear bumper, but nothing obvious, definitely no snow, ice or mud... The only thing I have not checked was the 12V battery voltage, but there were no other obvious issues while driving...

Address 3C: Lane Change Labels: None
Control Module Part Number: 2Q0 907 686 E HW: 2Q0 907 686 E
Component and/or Version: HRE_Master H25 0284
Software Coding: 66954750
Work Shop Code:
ASAM Dataset: EV_HREntryHellaGen3Mstr 001015 (VWE3)
ROD: EV_HREntryHellaGen3Mstr.rod
VCID: 3C21336546E0B0FBAFB-8068
2 Faults Found:

1572876 - Control Module for Lane-Change Assist
C1114 F3 [047] - Limited Visibility
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 40
Mileage: 1571 km
Date: 2022.02.14
Time: 23:44:14

1572877 - Control Module 2 for Lane-Change Assist
C1115 F5 [047] - Limited Visibility
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 1
Reset counter: 40
Mileage: 1571 km
Date: 2022.02.14
Time: 23:44:14

and

Address 10: Park/Steer Assist Labels: 1EA-919-294.clb
Control Module Part Number: 1EA 919 294 B HW: 1EA 919 294
Component and/or Version: PDC08K------- H02 0208
Software Coding: 0040014101
Work Shop Code:
ASAM Dataset: EV_EPHBO18VW3100000 002016 (VWE3)
ROD: EV_EPHBO18VW3100000_VWE3.rod
VCID: 3B23307943EEB7C3A61-806E

1 Fault Found:
13688835 - Databus
U1123 00 [039] - Received Error Message
[Steuergerät für Rear Cross Traffic Alert - RCTA_01.RCTA_Status - Fehlerspeicher auslesen]
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 40
Mileage: 1571 km
Date: 2022.02.14
Time: 23:55:32

 

I've had this issue too, on our first recent roadtrip.

 

Even though my NEW car is Sharan, I still have this issue in the first year. And I already went back to dealer several times including exchange the whole module, the issue still there. So it seems not "re-routed" or "module (hardware)" problems.....Does anyone have more clue or know how to fix it?

 

Used my OBD11 scanned all modules and reset every fault when the censors started acting up, and it resolved my issues. The number of times I've paid VW to reprogram them makes me sick the fix was that simple.

 

Anyone get anywhere with this error? It’s seems around 75% of the time I have a drive that’s over 2 hours I get the message about side assist not being available towards the end of the trip. It doesn’t have anything to do with weather or dirt/bugs. Because it’s happened on clear (and sometimes freezing) days. It seems to be more from the amount of time I’ve driven, so not sure if a module is overheating.

it does have the above fault recorded. I have my 10k service visit next Monday, so I’m going to see what they can do but it would be nice to be able to give them some ideas to check since my previous service visit left me feeling that they were a bit lazy/incompetent.

 

FWIW, I've had just the opposite condition. Intermittent false warnings from the right side rear sensor 🤷‍♂️.

 

Update after my service visit. They couldn’t find anything wrong despite providing the usage case (rainy days, clear days, freezing days, always 2 hour road trips) and fault codes 🙄. They also didn’t remove the bumper to check any wiring. They just cleared the fault and “cleaned” the area… on a side note I’m anal retentive about my car since it’s black and it stays pretty spotless. I ceramic coated the entire exterior and wash it weekly, so the most dirty it gets a small amount of dust or water spots after rain. So I have a hard time believing that a few specks of dust blocked the view of a sensor behind the bumper. I asked if they can file a ticket with software in case it’s software related but that question seemed to confuse them and they said they didn’t have any indication it was software related. I guess the next time it happens I’ll have to take a picture of my spotless bumper 🤷‍♂️