There are a lot of Audi A6 C5 (typ 4B) owners that have a great car, but are suffering from bad light output. Which can cause MOT fails, but even worse, unsafe situations on the road and accidents. This page will cover all Audi A6 C5 headlight options and how to convert to bi-xenon. Do you want to repair and/or improve your A6 C5 headlights?
We understand your problem and have developed solutions to repair and upgrade the output for every type of headlight delivered on the Audi A6 C5. Don’t miss out on the chance to improve your lighting and safety and order the Retrofitlab.com upgrade and headlight repair kits. So upgrade your Audi with an Audi A6 C5 bi-xenon kit today! Some of the advantages of using a Retrofitlab.com kit;
√ – 2 year warranty
√ – Cost effective
√ – Proven Retrofitlab.com quality
√ – Easy and effective
How can you upgrade or repair your Audi A6 C5 lighting to bi-xenon?
For all projector headlights there are replacement bi-xenon projectors. Because the original reflector bowls, which are part of the projector, loose their shine through years oof use, replacing the bulbs don’t do much for improving the light output. So don’t make the mistake to buy bulbs first! Our recommendations is to first replace the projectors. Second is to invest in some quality bulbs like the Osram CBI, because xenon bulbs do loose quite some power through their lifetime.
Pre-facelift 1997 – 2001 to Audi A6 C5 bi-xenon
On the Car and Driver magazine’s Ten Best list for two consecutive years, the Audi A6 C5 pre-facelift set a new trend for Audi’s executive line-up, with revolutionary styling and an aerodynamic shell that made for low drag in spite of the relatively large saloon. It remained in production between 1997 and 2001. The lighting technology used in this car is however more than 20 years old today.
Factory-fitted options included H1 low beam and H7 high beam halogen and D2S low beam and H7 high beam single-xenon headlights, both headlights are manufactured by Hella.
For both type headlights we have a high quality Audi A6 C5 bi-xenon retrofit / repair kit. This kit includes some very nice Aharon bi-xenon projectors, with very good light output. This very versatile projector can hold D2S bulbs but also H7 halogen bulbs, so you can use it with xenon bulbs or if needed for MOT or due to a limited budget with regular H7 halogen bulbs.
The halogen version features a 2.5-inch H1 projector, which produces an average light beam even when new. In many cases, its light output has been further compromised as bulb heat and general ageing cause the reflective layer to peel off.
With the bi-xenon kit, you can convert your headlights to bi-xenon and improve light output excessively. And with the high beam splitters you will have high beam from the xenon projector and the original H7 halogen high beam! Installation of the kit is also very easy from the backside of the headlight (see Video).
In the comparison below the top picture is the original halogen projector and the bottom the Aharon FX-r bi-xenon retrofit projector.
Quite impressive right?
Single-xenon setups also feature a 2.5-inch projector, this one designed in the late 90s. These projectors are known to lose their reflective layer. Even to the point where they become black inside, causing dangerously low light output.
With the bi-xenon kit, you can convert your headlights to bi-xenon to improve light output quite a bit. And with the high beam splitters you will have high beam from the xenon projector and the original H7 halogen high beam! Installation of the kit is also quite easy from the backside of the headlight.
At the end of the video (2:34), you can see a before and after comparison for the single xenon headlight versus the bi-xenon Aharon FX-r bi-xenon projector.
Audi A6 C5 pre-facelift headlight bi-xenon upgrade retrofit kit installation video
Facelift 2001 – 2004
Awarded the World Car of The Year in 2005, the Audi A6 C5 4B facelift set a new trend for Audi’s executive line-up, with revolutionary fastback styling and an aerodynamic shell that made for low drag in spite of the relatively large saloon. It remained in production between 2002 and 2005. The lighting technology used in this car is however more than 20 years old today.
Factory-fitted options included H7 low beam and H7 high beam halogen and D2S bi-xenon with H7 high beam Bi-xenon headlights, both manufactured by Hella.
The original Hella E55 that are used in these headlights suffer from burned and blacked-out reflector bowls which will result in a very bad light output. New bulbs won’t help much, because of the bowls. So new projectors are the best investment for improving light output. And in case of xenon, new xenon bulbs are also a good investment, because they can lose 70% of their original output.
Luckily for you this projector can be replaced by -in our opinion- the best projector on the market, the Aharon EvoX-r 2.0. The improvement of light output is quite extraordinary. So don’t hesitate and invest a tiny amount of money for a big improvement of light.
The halogen version features a 3-inch H7 projector, which produces an average light beam even when new. In many cases, its light output has been further compromised as bulb heat and general ageing cause the reflective layer to peel off.
The Aharon EvoX-r 2.0 can be used with H7 halogen bulbs (sometimes a small modification of the bulb base is needed). But with some high quality D2S bulbs, ballasts, H7-D2S cables and H7 splitters you can also upgrade to bi-xenon. When in doubt what to order, don’t hesitate to contact the Retrofitlab.com experts.
Bi-xenon setups also feature a 3-inch D2S projector, designed in the late 90s. These projectors are known to lose their reflective layer. Right to the point where they become black inside, causing dangerously low light output. Because the Aharon EvoX-r 2.0 can hold D2S bulbs, you can re-use your original bulbs, or invest in some high quality ones like the Osram CBI.
Because a lot of times the original igniter won’t fit nicely on the bulb we advise to use the D2S-D2S cables for an easy and correct installation/connection.
Allroad (all years)
The allroad models are all equipped with 2,5″ projectors, so the same kits can be used as the Pre-facelift models.
This way you can turn your allroad headlights into bi-xenon headlight, who doesn’t want is?
Picture from the light output in a misty situation from one of our German customers with an allroad;Audi A6 C5 allroad xenon retrofit
Source: A6 Freunde
Other lighting upgrades
LED parking/city light
LED turning signals
A really cool upgrade are LED turn signals.
√ – You don’t have a orange glow on the front when the turn signals are off.
√ – Because they are LED they are on/off and don’t fade on and off like halogen bulbs.
√ – Very bright so traffic will notice your turn signal better to improve safety.
LED High beam
!! Now you are all set to upgrade your light and impress the world !!
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