|
S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
Information |
|
New LED Globes - DIPPED BEAM MALFUNCTIONViews : 1204 Replies : 16Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Aug 1st, 2020, 10:23 | #1 |
Member
Last Online: Jan 15th, 2022 04:32
Join Date: Jun 2020
Location: Sydney
|
New LED Globes - DIPPED BEAM MALFUNCTION
Just upgraded my crappy halogen globes with some 21W LED H7 Globes I picked up on Ebay. 850 lumens; 6000K Colour.
They are a huge improvement on the stock halogen globes but I get this "Dipped Beam Malfunction" message come up on the dash. Simple job. Applied some silicon grease to connections to protect form future corrosion is all I did extra. Any ideas as to why? And How to Fix? .
__________________
2014 XC70 D5 2013 V40 D4 (MY 2014) Last edited by Agro; Aug 1st, 2020 at 10:26. |
Aug 1st, 2020, 11:54 | #2 |
Premier Member
Last Online: Today 10:50
Join Date: Nov 2015
Location: Poole
|
It's possible that the light circuit monitors the current through the bulb and the LED returns a reading outside of the expected one. I have replaced bulbs with LEDs in other cars and had to wire a resistor in the circuit to get the4 things to work but that was all done with advice from people that knew what they were doing and I'm not included in that group!
__________________
2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey |
The Following User Says Thank You to Tatsfield For This Useful Post: |
Aug 2nd, 2020, 21:08 | #3 |
Junior Member
Last Online: Jan 30th, 2024 22:50
Join Date: Oct 2008
Location: Malvern
|
Here’s a paragraph from the ABD.co.uk website:
“As LEDs run on a much lower wattage than a standard filament bulb, newer vehicles may experience false 'bulb failure' warning lights on the dashboard. To solve this, many of our bulbs are CAN-Bus compatible, meaning they can communicate with your vehicles ECU. In a small minority of vehicles however, CAN-Bus bulbs may still be incompatible” This blog item talks about using a resistor to solve the problem: https://www.autobulbsdirect.co.uk/bl...ts-the-basics/ (I’m not affiliated with ABD, am just a satisfied customer) Last edited by filbert; Aug 2nd, 2020 at 21:13. |
The Following User Says Thank You to filbert For This Useful Post: |
Aug 3rd, 2020, 00:42 | #4 |
Member
Last Online: Yesterday 23:34
Join Date: Apr 2018
Location: Newry
|
That quotation from ABD is rubbish. It's nothing to do with wattage. It's the fact that the failure monitoring circuit cannot see a resistance, normally the bulb, and sees it as a fault. LEDs do not register a resistance that is why a resistor is used and it fools the circuit monitor into seeing a normal circuit and no fault.
__________________
Feb 2010 XC70 SE Lux in White. T6. |
The Following User Says Thank You to XC70Virgin For This Useful Post: |
Aug 3rd, 2020, 01:39 | #5 | |||
Member
Last Online: Jan 15th, 2022 04:32
Join Date: Jun 2020
Location: Sydney
|
Quote:
Quote:
Quote:
Thanks y'all, That's what I have since found. I incorrectly purchased bulbs without CANbus resistors built in, hence the malfunction message. I've ordered correct ones now. I could also have purchased a CANbus resistor which would fit between my bulb and the vehicle's globe connector that does the same job. All that aside, they pump out an amazing amount of light. I don't expect my cheapo ebay globes will last as long as a reputable brand name but at <20% of the cost I'm happy to give them a go. Think I'll also order a resistor and have them fitted to both cars to compare performance. For anyone who is interested. These without resistor. These with resistor. .
__________________
2014 XC70 D5 2013 V40 D4 (MY 2014) |
|||
Aug 3rd, 2020, 07:45 | #6 | |
Premier Member
Last Online: Mar 20th, 2024 19:26
Join Date: Jan 2016
Location: Cross Country
|
Quote:
The lower wattage of the bulb means the failure detection circuit detects the bulb as having failed. Solution is to add a resistor to increase the current draw to something near that of a halogen bulb. Then the bulb failure circuit is happen, and you have a nice hot resistor keeping the engine bay warm, melting plastic and all that good stuff.
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
|
Aug 3rd, 2020, 07:46 | #7 | |
Premier Member
Last Online: Mar 20th, 2024 19:26
Join Date: Jan 2016
Location: Cross Country
|
Quote:
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
|
The Following User Says Thank You to SwissXC90 For This Useful Post: |
Aug 3rd, 2020, 08:27 | #8 |
Member
Last Online: Jan 15th, 2022 04:32
Join Date: Jun 2020
Location: Sydney
|
So it is correct of me to assume that you're saying that adding a resistor is a bad idea? That it's going to get quite hot and could cause damage?
__________________
2014 XC70 D5 2013 V40 D4 (MY 2014) |
Aug 3rd, 2020, 09:00 | #9 | |
Master Member
Last Online: Feb 15th, 2024 19:41
Join Date: Jun 2017
Location: Chesterfield
|
Quote:
I doubt that you will improve the throw or pattern of the beam. You only have to look at the boy racers who have done the same and have a haze of light around their headlights blinding oncoming drivers and very little shining on the road. Buy some quality halogens such as https://www.philips.co.uk/c-p/12972VPB1/visionplus-car-headlight-bulb Clean your Windows inside Get booked in for your cataract operation Wear your spectacles when driving Try sleeping at night then you won't need your headlights Last edited by 37 RUBY; Aug 3rd, 2020 at 09:05. |
|
Aug 3rd, 2020, 10:07 | #10 | |
Member
Last Online: Jan 15th, 2022 04:32
Join Date: Jun 2020
Location: Sydney
|
Quote:
They do improve the throw and pattern of the beam but most importantly, they light up the general area substantially better with a nice bright white light compared to the crappy beige of my standard Volvo halogen globes. I actually had to tip the beam downwards cause I felt sorry for those coming towards me. Anyway, back to the drawing board then. I suspect these 21w globes will not get dangerously hot, so anyone know if there will be any issue if I decide to put up with the malfunction message for a while?? .
__________________
2014 XC70 D5 2013 V40 D4 (MY 2014) |
|
The Following User Says Thank You to Agro For This Useful Post: |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|