CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001...
-
Upload
pepa-jolinesa -
Category
Documents
-
view
215 -
download
0
Transcript of CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001...
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 1/7
http://www.aclassinfo.co.uk/mypage.45.htm
Component Parts & AssemblyInstrument cluster bulbs & replacement.
Face lift model W168 from the 1/3/2001
Before you consider pulling your dash apart because you haven't got the various lightsdisplayed here, be aware the pre-face lift and face-lift models as with the W169 A
Class will have different light displays.
It is also worth noting, :- One owner recently contacted me because only two off the
lights on his instrument cluster illuminated when he turned on the ignition, althoughthe car still started and ran OK.
He took the car to a non MB garage who couldn't help and so booked it into an MBgarage for a diagnostics test.
In the meanwhile I gave him some pointers hoping this would help him with the
problem. While he was waiting for my replies he decided to disconnect the battery
which has been known to cure a number of problems on owners cars in the past (thereis only a need to disconnect the negative terminal.)
When he reconnected the battery some minutes later every thing lit up as normal and he was to say the least a happy owner.
He was also able to cancel the appointment with MB workshops which would haveset him back £50.00 at the very least. So please remember it is worth while
disconnecting you battery if you have an electrical glitch like this.
I would disconnect and leave the battery disconnected for several minutes.When you do reconnect put your lights On, before connecting the battery, thereby
reducing the serge of power to the ECU, and remember to re-set your windows and
ESP/ABS by turning the steering wheel fully left then fully right, this is best donewhile the car is slowly moving, the warning light will go out. Repeat the procedure if
necessary.
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 2/7
Back to differences in the models, there is for instance no engine management light on
the display when switching on the ignition on a pre-face lift a class. also the SRS lightonly stays on for seconds so make sure you look for it if checking.
Also before we can even consider replacing bulbs in the dash display we have to
consider what year 'A' Class we are driving.Gaining access to the bulbs in the instrument cluster display can vary considerably
from pre-face to face lift A168 from the 1/3/2001
Also if you are removing the display because the display in dimly lit then DO
REMEMBER that the display lighting can be adjusted by using the + (plus or -
Minus buttons on the right had side of the display. Check this feature before going
further, it may solve your problems.Also remember the bulbs light for different features on the car : In position 2 before
the engine is started most will be illuminated others will only light when the vehicle
lighting is on.For Pre Face-Lift 28/02/2001 see link bottom of page.
When looking at the dash one
of two displays will confront
you, look at the facia mouldingsA if it is continuous from one
side of the car to the other thenwe are dealing with a face lift
model. If that same moulding is
split just to the left of thesteering wheel, on right hand
drive cars we are dealing with
pre face lift
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 3/7
* The cowling that covers the instrument cluster behind
the steering wheel is reasonably easy to remove, althoughtwo tools are required, I made these up from and old
pegboard display hooks and they worked well. Obviously better than the proper MB tools as one of the securing
clips had already been broken and the car has only ever
been serviced by Mercedes-Benz.(MB)
*2 These two photo's show the
dome the right way up as whenfitted. As you look at the arch
of the cowling, although it is
impossible to see them thereare two slots about 1/8" deep.
* Slide the two hooked tools
with the tip pointing towards the outside edge of the dome in each case. as shown in photo 4.
*4 Please Note in these two
photo's the cowl (Dome) is
shown upside down. Turn thetools bringing the tip of the
tool into contact with the
securing clip, to release theclip apply slight pressure thus
lifting the clip, and pull the cowling towards the steering wheel.
*Sprung clip 3 If it does not release apply slightly more pressure when turning thetools, too much pressure may damage the clips.
* I found using an assistant allowed me to apply pressure and for the assistant togently pull on the cowling.
* the cowling can be completely removed, this now exposes the instument cluster which can also be removed if required, after removing the securing screw (if fitted)
* If using MB tools then pull the tools towards you to release the cowling.
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 4/7
*5 When replacing the instrument cluster
ensure it is correctly situated and re-secured as
found.
When replacing the contact ribbon (Multi pin plug), ensure it is firmly housed,
when replacing the Cowling ensure you engagethe three toes into the slots provided,
* Slide the cowling back into position and press firmly, the two clips will be heard to re-
engage holding the cowling firmly in position.
Havingremoved the
cowling, the
instrumentcluster becomes
visible. *1 Shows the bulb
positions 8 x
12v 1.2wattalthough there
are only 5 shown.
The location of these is such that it is almost impossible to remove them without usingsome form of tool. I found that a piece of 10mm bore polythene tube pushed onto the
bulb holder allowed me to turn and remove the bulbs without any problem, and without disturbing the Instrument cluster further.
I have not had the need to purchase bulbs
and so am unsure of cost or MB partnumber.However it should be stocked by most car
accessory shops 12volt 1.2 watt dash bulb.
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 5/7
The bulb will not come with the black holder, pull the glass bulb
from the holder and replace with
the New bulb.
Halfords Stock the 12V 1.2 W bulb their number stock 286.
Price £1.79 each.Bosch also do a bulb complete
with holder their stock number 509T Note (Some bulbs are not
removable from holder) ALL 'A'
Class dash bulbs remove. * 2 Temperature sensor.I have no information on this item, it is the probe of the temperature sensor.
*3 Multi pin connectors to the instrument cluster. Beforeattempting to release either of the multi- pin connectors
from the instrument cluster module, the battery MUST be
disconnected.(see page 35 for procedures on re-settingwindows and ESP/ABS)
This is because removing them trips the anti tamper circuit which causes the alarm to sound
To release the connector from the
instrument cluster module press
the small black pip 3 in towardsthe connector, then slide the
clamp round & away from the
multi plug.
To remove the multi plugs from
the module I suspect that the
instrument cluster module willneed to be released from the dash as there is insufficient room to pull & remove the
plugs
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 6/7
Should there be a need to remove the complete instrument cluster, the multi pinconnectors need to be removed as well as the temperature sensor probe being moved
out of the way.
When Savcic , a
fellow owner had problems he was
told by MB that he
needed a new
instrument cluster ,he knew he had
some bulbs gone ( bulb locations
indicated by A Which are removed
from the rear withthe instrumentcluster fully
assembled) and so
removed the cluster , cleaned the
terminals and replaced the
7/30/2019 CAMBIO LUCES CUADRO - Mercedes-Benz 'a'-Class Information.instrument Cluster Designation, 2001 Models
http://slidepdf.com/reader/full/cambio-luces-cuadro-mercedes-benz-a-class-informationinstrument 7/7
defective bulbs, his original problem still exists but this does not affect the running of
the car.
He was also told that he needed a new foil in the passenger seat as his SRS light
remained on, he replaced this and deleted the problem, so diagnostic tests aren't
always right and repairs can be carried out although it appears that MB fitters justreplace the part irrespective of cost!
However stripping components to this degree unless faulty should be avoided , as can
be seen the unit is made up of hundreds of micro components and damage can becaused just by the removal of the cover so take great care, Savcic had nothing to loose
as he was told it need replacing before he started. As the problems of the various
lights flashing when he turns off the ignition does not affect the running of the car hecan do this as and when finances allow.
The cluster is held in with one
screw b and two black clips a
The screw that secures the cluster is not installed on my car,
although there is provision for it.
NOTE A number of these photographs were taken through
the windscreen, before replacing
the cowling check to ensure allcomponents have been replaced in their rightful place.
Re-assemble in reverse order.
Pre Face Lift 28/02/2001 Removing/installing Bulbs Instrument cluster
Next
Return to IndexPurchase CD Rom
Please Make a donation.