96 C230 Heater, Wyper & locks

[webby08]

Hi, im new on here hence my 1st post, Can anybody help me, ive just bought a 1996 C230 Kompressor Elegance and i have a few faults

1. Heater motor not working (on any position)

2. Wyper motor only works on fast speed

3. Remote sensor on interior mirror for central locking broken off and doesnt work, can only lock car via passenger door with key

Any ideas would be great??

scott

 

[Iain the gadget]

Drop the fan out of its housing (simple job) and see if the brushes are OK. Common fault on these cars, fan problems.

 

[webby08]

Thanks for the quick reply, any idea where the motor is?? im handy with spanners if i know where to look.....

 

[roofless]

this is the heater set up http://www.detali.ru/cat/oem_mb2.as...GM=717.417&CT=F&cat=44V&SID=83&SGR=045&SGN=01

 

[television]

The wiper fault should be the stalk needs cleaning or replacing, and the mirror will have to be changed otherwise one cannot work out what is going on with the locking.

The fan motor should be as others have said, just drop it out to test it

 

[webby08]

Thanks for the help guys, hopefully thats enough information.....

 

[rgazeyy]

w202 97 a/c heater running intermittently

Hi All,

I am a new member with a 1997 Petrol C180 with a/c that has developed a fault that isnt good in this cold weather. The heater motor now regularly doesnt run resulting in windscreen steaming up and difficultly in defrosting ice. I have done some diagnoses but would love a pointer as to where the problem might lie. my idea is heater control ecu rather than heater or switch.

Diagnoses as follows

1) After a period of being not driven for hours or overnight. - heater motor with a/c set on or off will always run and run for the duration of the journey.

2) If a short run is done eg to petrol station or shop with the heater on - sometimes the heater motor will not run during the next journey despite being repeatedly turned on or off and set to various switch positions with or without a/c (although the ec button and light can be operated on and off)

3) When the heater motor is running - i can see a/c fluid through the glass lens in the engine.

4) The motor speed when set to speed 3 has occasionally been varying over the last few months - or when set to max - not slowing down after 5 mins or so (or though this may be temp related)

For info - car is always run with ac and fan on as suggested since purchase.


My logic says.

a) heater motor is ok because it sometimes works.
b) switch on centre console unlikely - as when fan isnt working it isnt working in any switch position and when it is working it works in all switch positions
c) not heater bushes as fan wouldnt operate ok and quietly when it works.
c) possibly the heater control ecu because of the intemitent nature - and the fact that it sometimes doesnt work after the short journey and then wont work until the car has been turned off for a period of time. (heat sensor or something ?)

Any advice welcome before I succumb to what is likely to be a heater and associated control change at a main dealer together with associated bill of probably half the value of the car.

Thanks in advance of any suggestions rich

 

[television]

Hello and welcome,, 99.9 times out of 100 its the brushes in the motor worn out, the fan can start with just the air coming in that turns the motor, sure the switches or press buttons can get dirty and make poor contact, but these can be cleaned

 

[rgazeyy]

W202Intermittent heater motor issue

Television,

Thanks for your help. You must live on this site. Are the bushes a self serviceable part and is there possibly a link to servicing them ?
Thanks for you advice . It is great to have the opportunity to keep the costs down which in its way keeps cars on the road longer.

 

[bigasotonuk]

Hi,
Welcome to the forum.
Have you got a digital display for your heater control?
I agree with Malcolm, i would be looking at the fan motor brushes first, if these were worn they would,nt cause the motor to run any louder. But i think it will be a combination of brushes and worn comm. Theory behind this is if the motor stops on the wrong part of the comm it won,t start, if you were to move the fan blade slightly thus moving the brushes to another part of the comm it will start.
according to MB when the fan motor brushes are worn out you have to replace the complete motor.
Take a look at this link it shows how to remove the fan motor.

http://202tech.mkosonen.com/howto/blower.html

 

[television]

I was a working guy up to this year, and why spend if you can do it yourself

The only link to this is here

http://www.detali.ru/cat/oem_mb2.as...417717.418&CT=F&cat=44V&SID=83&SGR=045&SGN=01

Its 390 in the link, and you can unscrew the motor from in the car

 

[bigasotonuk]

Hi,
You could try these links for brushes, but i have not used them myself.
http://www.anglocarbon.com/acatalog/form1.htm
or another link i had saved but the web site is dead but i have some contact details,
Tubesonline, 9 Scripton Gill, Durham, DH7 8BQ, 01913780193. They have them listed as CLK320 blower brushes. www.tubesonline.com
I think the brushes are 9x8x22 in size and will have copper braided tails.
I also saved some other info on replacement blower brushes but it means nothing to me but to a possible supplier it will mean something.

602.2030.90
Replaces
1.127.014.001/1.127.014.009
17 X 10 X 5
12 volt, 2 per set
BX 162 / BX182

Hope this has been of some help.

 

[rgazeyy]

Hi guys. Really enthused about such quick responses and enthusiasm hence my reply.

Already ordered brushes for £12.50 from ebay and plan to do this weekend.

Just one question for those that know more than I do.

I listen (and hear) the brush and commutator replies and that is where I am looking

but...

if the car is stopped and parked - and the heater fan doesnt work when it was stopped - but then I turn it off and 1 hr later - I start engine and it works-

what moved the fan - either to make the brushes or commutator gain circuit- this bit i cannot understand and as i am a computer programmer i need (no ... like) to know the answer as it improves my diagnoses skills next time.

Best Regards Rich G

 

[bigasotonuk]

Could be air moving through the vents when driving (or stationary) windmilling the impeller or just the movement of the car through corners etc.
I did say that it was only what i thought, and this is where i would look first on my cars if i had the same fault. It is the most common fault with the heater and initially the the cheapest simplest fix.

 

[television]

When the brushes are worn, the motor may not start until say closing a door, the vibration can just give that contact to start.
Any wind blowing in the front of the car will rotate the fan on the motor, and that could start it, if it was a faulty ignition switch the radio or wipers would not work at the same time as the heater fan stopped.

By pressing the buttons or turning the knobs, depending on what you have would tell you if it was the control unit.

We can only tell you what 99% of the faults are, there will always be the odd one out, thats electronics

 

[rgazeyy]

bigastonuk,

Thanks for your advice. And it is what i will be looking at. My question was not meant in bad grace. Only to try and glean a bit of extra knowledge from people that clearly know a lot. When I am out in the cold working on the car at the weekend i cant ask the question. I live by a motto - learn something new everyday that you can tell to someone else tomorrow - eventually we will all be that bit brighter.

Again thanks for your pointer.

Rich

 

[rgazeyy]

television,

i welcome your help in diagnosis and just wanted to reply personally re what makes brushes reconnect. (also agree completely). Brushes will be changed at £12 or so. I love my old Merc and those people who said it was an extravagance secondhand at £15k in 1999 yet have had two cars since are now eating there words and envious at my cheap motoring. It just these little issues that occur every so often - and then you feel that the main dealer who offers to replace large parts together with hefty labour bills are circling like sharks - and threaten to send me back to Ford Fiesta motoring again.

Rich

 

[television]

Its the same situation as a switch that has worn contacts or a weak spring.

If the carbon have the center wire attached to the end cap, this will limit the throw of the brush, so that when worn it is barely making contact, any movement in the car can just cause a minute arc to take place between the brush and the commutator, then the motor can start, this can carry on till all contact is lost as the brush becomes too short.

Brushes without the center wire joined to the end cap are bad news, in that they will wear past end of the brush until the spring touches the commutator and this will be the end of the armature.

When running on worn brushes, the arcing is increased, this is not good for it, as it is burning away the copper commutator.

Best I can do ;-)

 

[highlander34]

hi,i have just purchased a 1997 e230 avantguard. there is a few problems with the car.one is the fan on the heater doesnt seem to blow air.when the heater is off and i put the fan on to the first speed setting i can hear it kick in but when i put the fan up the settings to max fan there is no change.aanyone got any ideas whats gone? fan/control etc? ..........paul

 

[television]

Hi Paul and welcome, if the fan is running at the minimum speed only then the reg pack has gone down, number 218,221 and 222 you will need to take it out to see what version you have in your car, they are often on Ebay cheap

http://www.detali.ru/cat/oem_mb2.as...GM=717.417&CT=F&cat=45P&SID=83&SGR=045&SGN=01