Brighter Reversing Lights & Canbus?
01-30-2019, 10:03 AM
#1
Instructor
Thread Starter
Brighter Reversing Lights & Canbus?
I would like to fit brighter reversing lights because I often have to back up in a very dark & crowded parking area.
Initially I tried simply fitting 30w halogen bulbs (using an adaptor) but just got the 'check reversing lights' message and no lights.
So I then tried fitting LED replacement bulbs - very bright but got the error message again every time I select reverse
Does anyone have any ideas to overcome this issue? I cant seem to fool the canbus at all
Initially I tried simply fitting 30w halogen bulbs (using an adaptor) but just got the 'check reversing lights' message and no lights.
So I then tried fitting LED replacement bulbs - very bright but got the error message again every time I select reverse
Does anyone have any ideas to overcome this issue? I cant seem to fool the canbus at all
01-30-2019, 03:16 PM
#2
Burning Brakes
Hope an electronics guru reads your post because I'd like brighter backup lamps too. I assume you'll need to solder a resistor of appropriate value into each lamp circuit to match the electrical characteristics of the OEM bulb to fool the ECU, which probably sees the alternate as either a burned-out bulb (open) or a short. Too bad the LED makers don't make them electrically mimic common automotive filament bulbs, but then they'd be much more expensive.
01-30-2019, 05:01 PM
#3
I would like to fit brighter reversing lights because I often have to back up in a very dark & crowded parking area.
Initially I tried simply fitting 30w halogen bulbs (using an adaptor) but just got the 'check reversing lights' message and no lights.
So I then tried fitting LED replacement bulbs - very bright but got the error message again every time I select reverse
Does anyone have any ideas to overcome this issue? I cant seem to fool the canbus at all
Initially I tried simply fitting 30w halogen bulbs (using an adaptor) but just got the 'check reversing lights' message and no lights.
So I then tried fitting LED replacement bulbs - very bright but got the error message again every time I select reverse
Does anyone have any ideas to overcome this issue? I cant seem to fool the canbus at all
01-30-2019, 05:48 PM
#4
Instructor
Thread Starter
However I did manage to find some compatible LED indicators - VERY bright and flashy indeed!
01-31-2019, 12:45 AM
#6
Installed new backup lights “Reverse LEDs Bright OSRAM #87578881” purchased through deAutoKey.com. No errors and much brighter. I bought under Mk6 Jetta
The ones used are 1156 for Jetta Sportwagen. http://deautokey.com/product/reverse...gen-all-models
Pic of reverse lights won’t upload from iPad. WTH
The ones used are 1156 for Jetta Sportwagen. http://deautokey.com/product/reverse...gen-all-models
Pic of reverse lights won’t upload from iPad. WTH
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01-31-2019, 09:21 AM
#8
RL Community Team
Rennlist Member
Rennlist Member
Are these for 955 or 957s or are they the same. To make an led work in a previously incandescent application where the vehicle has a bulb control module monitoring and regulating things, you need to add a resistor so the module sees the same resistance with the led as it did with the filament bulb.
As opposed to the standard gold color resistors that you have to solder in or crimp lock on, I prefer the "black box" versions. They font get as hot externally since the box is an insulator around the resistor and you can usually find them with ends compatible to the type of bulb you're replacing, so they're plug and play without having to do anything to the factory wiring, so totally reversible.
You can find them on amazon by searching for canbus compatible resistor and then the bulb number you need.
As opposed to the standard gold color resistors that you have to solder in or crimp lock on, I prefer the "black box" versions. They font get as hot externally since the box is an insulator around the resistor and you can usually find them with ends compatible to the type of bulb you're replacing, so they're plug and play without having to do anything to the factory wiring, so totally reversible.
You can find them on amazon by searching for canbus compatible resistor and then the bulb number you need.
01-31-2019, 09:49 AM
#9
Instructor
Thread Starter
That's fine when you have a bulb with a dedicated holder but on the 957 tail light the bulb holder is part of a panel which has all of the rear lights (indicator/fog/tail/reverse) in a panel which is screwed to the back. As a result you cant extend the wiring and put the resistor in between the original holder and bulb. There is however, a network of zinc plated 'busbars' and you could solder/rivet/screw a connector to these and pop the resistor inside the casing if there is enough room - they might even work as a heatsink too.
01-31-2019, 09:51 AM
#10
RL Community Team
Rennlist Member
Rennlist Member
That's fine when you have a bulb with a dedicated holder but on the 957 tail light the bulb holder is part of a panel which has all of the rear lights (indicator/fog/tail/reverse) in a panel which is screwed to the back. As a result you cant extend the wiring and put the resistor in between the original holder and bulb. There is however, a network of zinc plated 'busbars' and you could solder/rivet/screw a connector to these and pop the resistor inside the casing if there is enough room.
02-01-2019, 07:54 AM
#12
Instructor
Thread Starter
Just had a conversation with Osram technical support and they tell me that there is a new, brighter model which replaces the earlier model. It is now part number 7458VW - just ordered a pair
02-01-2019, 10:25 AM
#13
RL Community Team
Rennlist Member
Rennlist Member
02-02-2019, 09:44 PM
#14
Are these for 955 or 957s or are they the same. To make an led work in a previously incandescent application where the vehicle has a bulb control module monitoring and regulating things, you need to add a resistor so the module sees the same resistance with the led as it did with the filament bulb.
As opposed to the standard gold color resistors that you have to solder in or crimp lock on, I prefer the "black box" versions. They font get as hot externally since the box is an insulator around the resistor and you can usually find them with ends compatible to the type of bulb you're replacing, so they're plug and play without having to do anything to the factory wiring, so totally reversible.
You can find them on amazon by searching for canbus compatible resistor and then the bulb number you need.
As opposed to the standard gold color resistors that you have to solder in or crimp lock on, I prefer the "black box" versions. They font get as hot externally since the box is an insulator around the resistor and you can usually find them with ends compatible to the type of bulb you're replacing, so they're plug and play without having to do anything to the factory wiring, so totally reversible.
You can find them on amazon by searching for canbus compatible resistor and then the bulb number you need.
My Sportwagen originally came with standard incandescent back ups in solid state boards. Osram made backup LEDs compatible with the Jetta Canbus so installed them with no errors or resistors and what a world of difference; however the Jetta backup fixture is not a narrow parallelogram like the Cayenne. Because the Jetta and Cayenne use exactly the same bulb for backups, it was no leap to install the Osrams in the Cayenne, thankfully with no resistor or errors.
Reading that Osram has an even brighter version I will wait to see when someone installs them to see if they are equally compatible and how they like them. If positive, I will upgrade again so please report your results.
02-02-2019, 09:50 PM
#15
RL Community Team
Rennlist Member
Rennlist Member
I ordered the new upgraded ones already. Will post some results when I get them installed.