MAN is a well-regarded brand in the commercial vehicle sector, known for producing high-quality lorries, heavy goods vehicles (HGVs), buses, and coaches. 

Their vehicles are trusted worldwide for transporting goods and passengers over long distances, designed to provide both durability and performance under demanding conditions. MAN vehicles are equipped with advanced features that enhance road safety and reliability, essential aspects in the transport industry. 

Among these features, efficient lighting systems play a key role in driver safety, particularly under challenging road and weather conditions.

RH Low Beam Failure Warning Message

Importance of Xenon Lights – D2S and D2R Bulbs

For MAN vehicles, xenon lights, particularly D2S and D2R bulbs, are popular choices due to their superior visibility and efficiency. These bulbs produce a bright, white light that significantly enhances the driver's vision, improving clarity and reducing eye strain, especially in low-light conditions. 

This visibility boost is critical for large vehicles like buses, coaches, and HGVs, where safe operation depends heavily on a clear view of the road and surroundings. Xenon lights are more efficient than traditional halogen lights and have a longer lifespan, making them a preferred choice for commercial vehicles that demand high reliability.

How to Identify What Has Failed?

When a low beam light fails, it’s essential to identify whether the issue is with the xenon bulb itself or with the ballast. HID bulbs can sometimes fail due to wear and tear, but it’s also possible for the ballast; the component that regulates the power to the xenon bulb, to malfunction. 

To determine the exact issue, start by visually inspecting the bulb for any signs of damage or clouding. Then, try swapping the bulb with a known working one. If the new bulb doesn’t work, the ballast may need to be replaced instead.

Common Warning Messages

When a low beam light issue arises, drivers often see specific warning messages on their vehicle’s dashboard. These warnings are designed to notify the driver of issues with the left-hand (LH) or right-hand (RH) low beam light. Here are some of the most common warning messages:

  • Van Hool Vehicles:
    • Dimlicht links
    • Dimlicht rechts
  • MAN Vehicles:
    • LH Low Beam failure
    • RH Low Beam failure

These messages indicate that either the left or right low beam light needs attention. Following these prompts can help drivers and maintenance teams quickly locate and address the issue, ensuring the vehicle remains safe and compliant on the road.

Diagnosing and Testing the Issue

To diagnose which part has failed, follow these steps:

  1. Swap the Bulbs: Switch the suspected bulb to the opposite side. If the failure message moves with the bulb, then the bulb is likely the issue.
  2. Visual Inspection: Check the filament inside the bulb. If it appears burnt or darkened, it’s typically a sign of a failed bulb.
  3. Flickering Lights: Flickering or random shut-offs are strong indicators of a ballast issue rather than the bulb itself.
  4. Confirm with a New Bulb or Ballast: For a more definitive diagnosis, try installing a new bulb or swapping the ballast with a known working unit to ensure you’re addressing the right component.

Reasons for Xenon Light Failures

Xenon headlights, while long-lasting, do have a lifespan. The normal lifespan of a xenon bulb is between 2,000-3,000 hours, but over time, the performance can degrade due to the constant ignition and high voltage supplied by the ballast. Additionally, the xenon control unit (ballast) itself can wear out over years of use, leading to failure or intermittent issues like flickering.

Fixing the Low Beam Failure Issue

Once you’ve identified the faulty component, replacing it with a new 24V xenon ballast or HID bulb is the most straightforward solution. Replacing the ballast or bulb should resolve the low beam failure issue, and after installation, the warning message should disappear from the vehicle’s display.

Suggested Replacement Parts:

You can find a variety of compatible xenon ballasts at Xenons4U that will match the needs of MAN vehicles and other compatible models.

Compatible Hella part numbers

More compatible Philips part numbers

  • LVQ 224-L200
  • LVQ224-L200
  • 9287 017 20500
  • 928701720500
  • 9287 020 20500
  • 928702020500
  • LVQ224-L500

More compatible hella part numbers

  • 5DV 007 810-11 5DV007810-11
  • 5DV 007 810-09 5DV007810-09
  • 5DV 007 810-19 5DV007810-19
  • 5DV007810-011
  • 5DV 007 810-12 5DV007810-12
  • 5DV 007 810-17 5DV007810-17
  • 5DV007810017 5DV007810-171

OEM part numbers

  • SISU 183-520-0151 1835200151
  • SCANIA 20 223 997 20223997 1853958 
  • VOLVO 2 107 131 4 21071314
  • KAESSBOHRER KASSBOHRER 7.512.034.027.0 75120340270
  • MAN 81.25943-6017 81259436017 ZF920006655
  • Mercedes Benz A0025451516 MA0025451516
  • SOLARIS 0000045990 0000-045-990
  • DT Spare Parts 121387
  • VDL 20277972
  • VAN HOOL 10861620
  • Tranberg 9400103 9400074
  • KÄSSBOHRER 75171311020
  • MACK 438187703
  • LIEBHERR 7026908
  • DEMAG 76961973
  • KOMATSU 76961973
  • TEREX 76961973
  • HELLA 5DV990264011 5DV990264-011
  • NOGE C272400007
  • ROSENBAUER 535692

Compatible MAN TGA headlamps

  • ZKW 569.14.000.04
  • MAN 81.25101-6611

Compatible machines 

Along with having the same part number one should be particular about the Compatible machines that whether you have the model and machines from the ones listed below or not:

  • Mercedes-Benz ACTROS ATEGO MK SK
  • SCANIA Serie 4
  • Astec RT160 R160
  • Volvo B6 B7 B9 B10 B12B Bus
  • Volvo Carrus Bus touringcar B12M
  • 2002 2003 2004 2005 2006 2007 2008
  • Volvo B9B B9R Plaxton Coach Bus
  • Volvo 8500 8700 9700 9900 Bus
  • Volvo Beulas Aura Coach
  • MAN T.G TG series trucks
  • Terex-Demag AC100 Mobile Crane
  • Terex Demag AC200-1 Crane
  • Scania F K N Series
  • EvoBus Coach Bus
  • Sisu Coach Bus
  • Temsa Opalin Safari HD Bus
  • Neoplan Setra VDL
  • Van Hool Coach Bus
  • Van hool coach TDX27
  • Van hool coach ExquiCity24
  • Van hool coach EX15H EX16M EX17H
  • Van Hool A300T AG280T ExquiCity
  • Van Hool AP1130 AP1137 AP1237 AP1325 AP2375
  • Van Hool T915 T916 Atlon
  • Van Hool TX11 TX15 TX16 Alicron
  • Van Hool TX15 TX16 TX17 TX18 TX16 TX17 Astron
  • Van Hool TX15 TX16 TX17 Astronef
  • Van Hool TX17 TX18 TX19 Altano
  • Van Hool TDX20 TDX21 Altano
  • Van Hool TDX25 TDX27 Astromega
  • Vanhool Van Hool Astro Mega TD927
  • Van Hool T917 BP-JB-23 2008 2009 2010
  • Van Hool T917 SX3
  • Hella Flood Lights
  • Hella Auxiliary Lights
  • Hella Spotlights Spot Lights
  • Ballast for Flood light for Helideck
  • For Marine Lights
  • For Ships Boats Yachts lights
  • Offshore Oil platform
  • Entegrar Anthem Coach 42RBQ 44B 2016
  • Iveco Magelys Bus Coach
  • Helideck floodlight Benelux tb-amg-132 HFL series
  • PistenBully Pisten Bully 400 400W 4F
  • ParkPro Park Pro Trail
  • 2010 2011 2012
  • Scania Transit 2000 Coach
  • Pistenbully 100 Snow Cat
  • Pistenbully Snowplow
  • Pistenbully Snow groomers
  • Pistenbully 300
  • Terex Explorer 5600 Crane
  • Stadler trains
  • MAN TGA Tractorhead 2007 2008 2009 2010
  • 18.440 18.430 18.480 4x2 4x4 Diesel
  • Volvo B12 B12R B12B Coach
  • MAN Lion's Coach L EfficientLine Bus
  • MAN Lion's Coach R07 R09 2017
  • Grove GMK5225 GMK 5225 Crane Work light
  • Grove GMK 3055 5180 Mobile Crane Auxiliary Lighting
  • VDL Bova Futura Coach 2008 2009 2010 2011
  • Iveco Eurorider C-31 C-31A C-35 C35-A
  • Iveco Eurorider 31 City Bus
  • 2005 2006 2007 2008 2009 2010
  • Beulas Stergo Triton-Irisbus
  • Plaxton Leopard coach
  • Volvo B8R Plaxton Leopard
  • TLD TPX-200-MT TPX200
  • Super Tug Aircraft Pushback Tractor
  • TLD TPX-200S TPX-200-MTS TPX-200-MT
  • TLD TPX-500
  • TLD TPX-100-E
  • TLD TPX 200XE TPX-200-XE
  • Towbarless aircraft pushback tractor
  • Hella 1BL007834-16 1BL 007 834-16 Halogen Insert headlight
  • Tranberg TEF 9964 230/254V 
  • Xenon Helideck Flood Light Floodlight Aviation and Marine Light
  • Tadano ATF 110 ATF110 Mobile Crane
  • Tadano Faun Mobile Crane Boom light
  • Tadano Faun ATF 110G-5 ATF110G-5 110-5 110G-5
  • Terex-Demag AC160 AC 160 Mobile Crane
  • Terex-Demag AC160-1 AC160-2 AC160-5
  • 2012 2013 2014 2015 2017 2018
  • Technor TNXCX Lighting lamp
  • Technor TNCX Helideck Floodlights
  • Bartec Technor TNXCX 130 TNXCX130 Helideck Floodlight
  • Terex-Demag AC 350 AC350 350-6 Crane
  • VDL Futura FHD2 Coach Bus
  • Futura FHD2-106
  • Futura FHD2-135
  • Futura FHD2-122
  • Futura FHD2-139
  • Futura FHD2-129
  • Futura FHD2-148
  • Kassbohrer Pistenbully 400 600
  • Mercedes-Benz Setra Bus S417 415UL 2007
  • Helideck floodlight Benelux tb-amg-132 HFL series
  • Goldhofer AST-2 Aircraft Tow Tractor
  • Grove GMK3050-1 Crane boom lights application
  • Jonckheere JHV2 SHV134 JHV140 JHV140-460  Coach Bus
  • 2008 2009 2010 2011 2012
  • Solaris Urbino
  • Solaris Alpino
  • Solaris Vacanza
  • Neoplan N2216/3 SHDL N2216SHD Tourliner Starliner
  • 2008 2009 2010 2011 2012
  • Setra S415 GT HD Bus Coach
  • 2005 2006 2007 2008 2009 2010 2011 2012
  • MAN Beulas Glory Coach
  • MAN Beulas Aura 24.440
  • MAN Beulas Cygnus 19.360
  • MAN Beulas Spica
  • MAN Beulas Mythos 26.480
  • VDL SB4000PF Beulas Cygnus

These part numbers are directly compatible with various MAN models and other heavy-duty vehicles. Check out these products to make your replacement process smooth and hassle-free.

Conclusion

Low beam failure warning messages in MAN buses, lorries, and coaches can be resolved by understanding and troubleshooting the xenon lighting system. By following the outlined steps to inspect, identify, and replace the faulty part, you can ensure safe driving and restore full visibility on the road. For reliable replacement options, Xenons4U offers a variety of compatible xenon ballasts and HID bulbs that fit MAN and other heavy-duty vehicle models, helping you find the right solution.