Volkswagen Polo Ignition Light and EPC light on
|AutoInsider Ref#: 4172|
Use this number to refer to this problem
|Car||Volkswagen Polo 1.4 S|
The engine warning light and epc(?)warning light come on and go off from time to time.
I have taken it to the dealers who tell me that the diagnostic computer says that there is nothing wrong with the car.
More Volkswagen and Polo problems
Since: Oct 2009
|Posts: 445 | Fixes: 8086|
Could have a look at this , might help .
VW Polo EPC Warning Light - Phred Fillips
I have read several items that indicate that the brake pedal s/w can be the cause of the epc light to display.
I have a 2000 x-reg 16v 1.4 Polo estate and there are indeed TWO switches on the pedal.
One is white with two electrical connections and this operates the brake lights - It is sometimes called Switch E.
The other is blue - sometimes called switch F - it looks like a switch, but it is technically called a valve! It also has two wire connections. This switch, or valve is connected to the Engine Control Unit (ecu) and acts as a fuel cut-off device when the car is braking - obviously, the ecu does not want to needlessly pump fuel into the engine when the car is under brake - so if it operates properly slightly improves MPG, particularly if one is doing a lot of stops and starts. From my experience, even with the switch/valve removed,the car will drive normally (although the epc remains on) and some fuel may be lost at the points of braking.
Either, or both switches can be removed, although a little ackward, by kneeling outside the driver's and looking up the pedal stems (after removing any easily removed covering). You will obviously need a torch. Remeber, the white s/w for the brake lights - the blue s/w (valve) for the braking fuel cut-off device.
If you need to replace, try a parts specialist, often much cheaper than a Vw dealership.
VW Polo EPC Warning Light - bert-j
Almost certainly will be a faulty brake light switch - very common on Polo's. Probably nothing else wrong.
VW Polo EPC Warning Light - Aprilia
EPC - Electronic Power Control (i.e. Engine Management system) fault. Means there is most probably something wrong with a sensor signal. Could be the brake light switch as mentioned above. When fault is fixed the light will go out.
Posted on Tuesday 16th of February 2010
Don't understand this?
Post a further question on this thread using this form Post a further question
Please note that the comments made here and the suggested solutions are the opinions of the posting user and should not be taken as professional advice. If in any doubt please seek professional advice from your local specialist. Find mechanics in your area using our Auto Local Directory.