Mercedes w203 radio replacement
- MERCEDES W203 RADIO REPLACEMENT UPDATE
- MERCEDES W203 RADIO REPLACEMENT DRIVER
- MERCEDES W203 RADIO REPLACEMENT CODE
MERCEDES W203 RADIO REPLACEMENT CODE
The M271 engine has an issue with the PCV hose (crank case ventilation hose and non/return valve) What happens is that due its location it gets a great deal of heat and in time degrades splitting and allowing unmetered air into the throttle body often causing lumpy idle an over rich mixture DTC code P0172. The truth is, if you find such a person there is a good chance he can fix your existing instruments anyway! Personally I would check out the power regulators on the PCB if the backlight is found to be intermittent.
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![mercedes w203 radio replacement mercedes w203 radio replacement](https://cdn.shopify.com/s/files/1/2983/5972/files/W203_AX1000_1_1024x1024.jpg)
This can be done cheaply, but I am sure that you would have to accept the miles/Km showing on the odometer as that of the donor vehicle – unless you can find some one to change the mileage to that of your old one. There are people that repair instrument clusters, I think you also have the option of replacing the complete unit with a used one.
MERCEDES W203 RADIO REPLACEMENT DRIVER
Maybe you could look for the regulator circuit that feeds the LED light panel (matrix of orange LEDs) If however there are odd pixels failing and the display is erratic in what it actually displays (strange characters and the back light is ON) then I would look toward the display driver IC circuit to be faulty. If all the other instrument function correctly then I would suspect this. Without back light illumination the display will look blank. The primary thing to identify is if the illumination LED array at the rear of the pixel panel is failing. Its difficult to say what is the problem without seeing first hand the issues. This is a simple, easy fix for a fading MFD and one that can save you a great deal of cash. Not the end of the world, but avoided if you make double sure the console plug is correctly inserted before turning on the ignition. This will have to be reset with a Mercedes OBD scan tool or with the dealer Mercedes Star diagnostic tool. The slight downside is, what will have happened when you turned on the ignition with the cluster disconnected, the SRS system will have flagged a fault on its self test (SRS Indicator fault) and will have raised an SRS fault code. Dont panic! just correctly insert the plug, latching it fully home and try again. Just a couple of points to note during this task: Always make sure that the white loom connector to the back of the cluster is as fully home as possible when re-connecting – this plug will often engage half way and give the misleading impression that it is fully inserted and all is OK, the lever even moves down to its locked position! However If it is not fully home the instrument cluster will appear totally ‘dead’ when you turn on the ignition.
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Now to replace the display, this is a simple task and can be done with only a length of welding rod, a small screwdriver and some care. Also there is another company, probably in China who can supply the complete W203 display with bonded cable here (Also other MB and car models it seems) I have not used either company but I thought the links may prove useful.
MERCEDES W203 RADIO REPLACEMENT UPDATE
UPDATE – It appears there is a company who specialises in the supply of display ribbon cable kits for various MB models here. I managed to pick one up for £30, advertised with a photograph showing the display clearly illuminated still fitted to the car!
![mercedes w203 radio replacement mercedes w203 radio replacement](https://m.media-amazon.com/images/I/512qgEIS0NL._AC_SY355_.jpg)
You have the advantage of being able to choose any similar instrument cluster, not bothering about, model year, petrol or diesel types, engine size, 4 or 6 cylinder etc… This gives you the edge! Just buy the cheapest you can find. The online auction sites are a great source of cheap parts and if you are prepared to scour the listings you will find a bargain. To give an idea of the cost of a used instrument cluster from a breakers they are usually about £65 to £95 GB pounds. So what to do… Buy a new speedometer (lots of cash) or a used one (incorrect odometer reading)? Or swap out the display from the cheapest used one you can buy !