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Hi,

This forum and the community rocks!

A year ago I bought a Polo 6R 1,2 TDi 3 door, I’m happy with the car it’s great for my needs.

I recently got an OBDeleven device for fun and discovered some interesting things. My opinion is that the bi-xenon are not coming originally with this car and maybe the previous owner installed it. It works great but since I bought the car the drivers side rear parking light does not work and there is a bulb sign on the cluster. Sometimes the error disappear and the parking lights work fine sometime the rear left does not work.

I would like to resolve the issue and have put my scan and coding below.

Could this issue be caused by bi-xenon install? Maybe fix is in the coding? I also discovered glow plug fault as well.

The following is my faults scan!

OBDeleven vehicle history log
Date: 2022-03-09 14:49:11

VIN: WVWZZZ6RZEY089796
Car:
Year: 2014
Body type: D3 Hatchback
Engine: CFWA 55 kW (75 hp) 1.2l
Mileage: 278150 km

---------------------------------------------------------------
Full scan
Control Units: 11
Fault count: 6
Control Units:

09 Central Electrics
System description: BCM PQ25 Max4
Software number: 7H0937090B
Software version: 0712
Hardware number: 7H0937090
Hardware version: H74
Serial number: 0571 252132815

Faults:
03431 - Activation of left parking light
static


03432 - Activation of right parking light
Intermittent


00447 - Function limitation due to excessive voltage
Intermittent



01 Engine
System description: R3 1.2l TDI
Software number: 03P906021AJ
Software version: 9978
Hardware number: 03P907425A
Hardware version: H10

Faults:
P067200 - Cylinder 2 Glow Plug Circuit
static


P067100 - Cylinder 1 Glow Plug Circuit
static



56 Radio
System description: Radio RCD310
Software number: 5M0035186J
Software version: 0082
Hardware number: 5M0035186J
Hardware version: 042
Serial number: VWZ1Z2N1660442

Faults:
03138 - Input AUX IN
static


The following is the coding!

OBDeleven vehicle history log
Date: 2022-03-09 15:52:54

VIN: WVWZZZ6RZEY089796
Car:
Year: 2014
Body type: D3 Hatchback
Engine: CFWA 55 kW (75 hp) 1.2l
Mileage: 278370 km

---------------------------------------------------------------


Backup
01 Engine
System description: R3 1.2l TDI
Software number: 03P906021AJ
Software version: 9978
Hardware number: 03P907425A
Hardware version: H10
Backup name: Engine
Long coding
00114014000400080000
Mileage: 278370 km
Date: 2022-03-09 15:49:41

Backup
09 Central Electrics
System description: BCM PQ25 Max4
Software number: 7H0937090B
Software version: 0712
Hardware number: 7H0937090
Hardware version: H74
Serial number: 0571 252132815
Backup name: Central Electrics
Long coding
64B0293F08A10000002009916C2B0DD05A00472F60051040200000030000
Mileage: 278370 km
Date: 2022-03-09 15:49:41

Backup
56 Radio
System description: Radio RCD310
Software number: 5M0035186J
Software version: 0082
Hardware number: 5M0035186J
Hardware version: 042
Serial number: VWZ1Z2N1660442
Backup name: Radio
Long coding
05000400020001
Mileage: 278370 km
Date: 2022-03-09 15:49:42

BCM coding is correct for Bixenon.

The most likely problem is that some of the two wires required for the front LED modules were not installed from the BCM to the headlights when the Bixenon headlights were retrofitted. But this is only a more than likely guess, as long as the bi-xenon headlights were actually retrofitted and were not the original equipment from the factory.

Removing and putting in screws is done by anyone... the wire and electronics stuff seems to be the hard part...

If the BCM coding is all ok then I will try my luck tinkering. I’m a newb but not afraid to explore. I had the opinion of a retrofit because of the fitment of my headlights, there are some gaps so I naturally thought previous owner changed them. Is there any other way to confirm this retrofit?

I did a factory options check based on the sticker in the boot and found the following for my polo, I used this website (http://igorweb.org/equidec/)

1AT = Electronic stabilization program (ESP)
QI6 = Service indicator 30,000 km or 2 year ( variable )
7MJ = Emission standard EU5 plus
C0D = Steel wheels 5J x 14
HK9 = Tires 175/70 R14 84T
4KF = Side windows in heat-insulating glass, from B-pillar and rear window dark tinted
1ME = Steering wheel
Q1A = Standard front seats
J1D = Battery 380 A (72 Ah)
8K1 = Separate daytime running lights
8M1 = Rear window wiper and washer system with intermittent control
8JW = Twin headlight for driving on the right (gas discharge) w/ integrated high beam
U0C = Instrument insert with tachometer clock and km/h speedometer
8RL = 6 speakers (passive)
8TC = Rear fog light for driving on the right
8WG = Cornering lamp
8AE = Radio "RCD310 MP3"
8X1 = Headlight washer system

Not sure what to make of 8JW? Does it indicate that the bi-xenon came from factory?

According to partslink, and the pr codes, this car came with bi xenon headlights from factory.

I’m super happy to hear that this is not a botched retrofit. Any ideas on those fault codes? Causes and remedies?

thanks a bunch ciclo and iichel

In that case, physically check both taillight parking light bulbs.

I believe that these bulbs have already fulfilled their purpose (278K Km) or the contacts are dirty or damaged, ...although there is a possibility that the previous owner installed LED bulbs.