"Mysteries" of the C4 CEL/ Air Bag/Seat Belt warning light panel

[UrS4boy]

Many but not all of the European and Rest of World (RoW) C4 UrS and all of the North American UrS cars came with a 6 position warning light panel above the three gauge cluster instrument cluster (the one with the clock, oil temp and oil pressure (or volts in an UrS6)).

LHD:


RHD:


The NAmerican UrSs only had three of the six positions active, i.e. the Check Engine Light (CEL)(or Malfunction Indicator Lamp (MIL)), the Air Bag light and the Seat Belt warning light. But as this photo shows, there were three other potentially active lights:



Here is a similar but different warning light panel from a Euro UrS4:



Photo courtesy of Zoig from here on the S2Forum

The meanings of these three extra lights, two green ones and one yellow one, are shown below (note: they don't say anything about the check engine light - which I think the RoW cars did NOT get):





And for the standard 6 light panel with only the airbag, check engine and seat belt lights active, this is how the wiring shakes out:



Reference:

-the English Language RoW UrS6 Owners' Instruction Manual:

Betriebsanleitung
Audi S6
Englisch 7.94
951.561.4A4.20



More C4 UrS Instrument Cluster info at:

C4 UrS Instrument Cluster 101

[ChrisAudi80]

Please note that in my RHD S6 the oil pressure gauge is a oil temperature gauge. Was this an option?
Also, during the hook up wiring of my S6, they accidentally connected the air bag wires to the CEL light. This now flashes a lot.

[mouse]

More info on (80 and coupe quattro specific) CEL/MIL operation here:
http://s2central.net/inst_clust_mil.html

[UrS4boy]

Please note that in my RHD S6 the oil pressure gauge is a oil temperature gauge. Was this an option?

Christopher: As far as I know, the UrS6s lost their oil pressure gauge, kept the oil temp gauge and gained a voltmeter (where the oil pressure gauge was located), as shown below for a LHD car. Can you post a photo of your RHD UrS6 instrument panel?

[merlin's S4]

Just to note, my '93 S4 doesn't have any lights in that part of the instrument cluster. It's blanked off with a black plastic part that is screwed into place.

I found the bulb holder for the MIL (diagnostics) lamp behind the dash and connected it to one of the unused blanks underneath the trip computer.

[UrS4boy]

Just to note, my '93 S4 doesn't have any lights in that part of the instrument cluster. It's blanked off with a black plastic part that is screwed into place. I found the bulb holder for the MIL (diagnostics) lamp behind the dash and connected it to one of the unused blanks underneath the trip computer.

Thanks for that reminder. I DO have a 93 Euro UrS4 cluster and it too does not have any warning lights, just the blanking plate.

I think Paul N. suggested using the (CAT) symbol in the warning light section under the trip computer since it is unused on a 20VT (it is for the V8 cars apparently).

I will modify my Mysteries post.

On a related note, someone has told me that there is a TUV directive, ECE R-48, maybe from Oct. 95 ( http://www.unece.org/fileadmin/DAM/t...egs/r48r6e.pdf) that supposedly states:

"From ECE R-48. Vehicles "all"
Closed circuit tell-tale:
Prescribed. The function control is prescribed for the front
and rear direction indicators. Vehicles equipped to pull a
trailer need to have a special function control for the direction
indicators of the trailer, unless every malfunction in a direction
indicator of the towing elements can be signalised via the
control unit of the pulling unit."

The <=1=> symbol supposedly satisfies that requirement.

[mdz]

Immobiliser symbol is used on European C4 A6/S6

[UrS4boy]

Immobiliser symbol is used on European C4 A6/S6

So based on Merlin's comments and your comment, the warning panel in my photo might only apply the C4 A6/S6s not all C4s. Good to know. (Mine is from a 95 or 96 North American UrS6).

[martinjs]

My UK S4 (nov 92 MY) which i have now sold had the blanking plate, but i got hold of a cluster from an early 'J' plate car (dunno exact month of manufacture, aug 91-july 92) to replace peeling dials on mine which had the warning panel present.

[Duffelcoat]

Immobiliser symbol is used on European C4 A6/S6

Mine lights up on mine too when I start the car, the yellow car symbol with key, unless it is wired wrong...

[mcandmar]

Dont remember ever seeing lights positioned over the three dials, but will double check to confirm.

[Zoig]

(Mine is from a 95 or 96 North American UrS6).

My MY1995 (built 09.1994) UrS6 has the same warning light array. I also have spare UrS4 cluster of unknown year also LHD, this one has different symbols, ABS aus or ASR aus symbols i think. i can dig it up and post pictures if you are interested.

Also the "Side lights" green symbol is only used on Italian market cars, i haven't seen them working on other LHD european ones. It could be because some local Italian law demanded this along with the wheel arch extensions/protectors for UrS models.

[UrS4boy]

Dont remember ever seeing lights positioned over the three dials, but will double check to confirm.

Turns out that a "Euro" (or UK) UrS4 might not have those lights. Assuming that is true, do you have a seat belt light and air bag light? And, if so, where are they? Under the trip computer?

[UrS4boy]

My MY1995 (built 09.1994) UrS6 has the same warning light array. I also have spare UrS4 cluster of unknown year also LHD, this one has different symbols, ABS aus or ASR aus symbols i think. i can dig it up and post pictures if you are interested.

Please

[ChrisAudi80]

Christopher: As far as I know, the UrS6s lost their oil pressure gauge, kept the oil temp gauge and gained a voltmeter (where the oil pressure gauge was located), as shown below for a LHD car. Can you post a photo of your RHD UrS6 instrument panel?

See attached. Btw, Chris is short for Christian.