iulianpopa

From yesterday the ESP and ABS malfunction is coming on,
Also the yellow ABS light in dash in On,
I tried the ABS and the ESP in snow and is not working
Do you have a idee where is the probleme?
my car E320, 2003
Thanks for your help

Eayacht

By any chance did you recently change the rear rims and tires size on your car?

iulianpopa

no, I didn't change any tires on my car.
from few weeks I have the Battery on red also, but just when it's very cold outside. when I keep the car in garage the battery is not in red.
I change the battery (the big one) and the battery stil red when the car is outside. I don't know if |I have to change the small one? I bought the car 4 years ago, I drive more then 100.000Km without anything major to repair.

Eayacht

I have the same car and year as yours, I asked about the tire size because a few months ago I replaced the rims and tires on my car and I bought the wrong size tires, as soon as I left the tire shop my esp an Abs light came on, so I installed the correct size tires then cleared codes and all worked well,

Maybe you should check the voltage on your small battery

Good luck

iulianpopa

So do you think guys could be the small battery???
120$ cost me the new battery.

Eayacht

Before replacing the small battery check the voltage on it

iulianpopa

How do I check it?
with the engine on?
how many volts may I have?
thanks

Eayacht

You don't have to have the engine on. You connect a voltage tester to the battery and it will tell you how many bolts it has. If you don't have one you can buy one at any auto store for about $20. Actually most auto parts will test the battery for you for free.

iulianpopa

thanks,
but what voltage must be on each battery?

Eayacht

Upps sorry. Between 12 and 13

But also remember when you test the battery it might read 12 volts but when you put load on it it might drop the voltage. So best bet is to take the car to a shop and have them load test the battery before you go and spend money on a brand new battery.

Holmes5518

Don't guess at it. There's so much it could be. You need a scan. It could be anything from a steering angle sensor, to wheel speed sensor, to as simple as a stop lamp switch. Got tail lights when you step on the brake? It's highly unlikely to be that battery.

iulianpopa

today something new, check engine is on and the code P0500, speed sensor, I remove it and we will see if it's coming back, aftre the first 100km I don;t have any check engine on

Eayacht

Start a new thread asking about the code that came up P0500. I'm sure someone will have an answer what is is

Eayacht

P0500 is a partial message. The P0500 means either a 20CA (the left rear wheel speed sensor isn't sending a signal) or a 20CB (the left front wheel speed sensor isn't sending a signal). If it's not the tires, a shot of compressed air and possibly some brake cleaner may used to clean the left side wheel sensors. I'd wear a mask.

iulianpopa

The voltage on my battery is 11.2, date on the top of the battery is 0311,so the small battery is from... 2003, original battery on my car , I change thebattery (the small one) but nothing change on the dash, ABS, ESP light is on,also the ABS yellow light is on, and the check engine on (code P0500). I call the dealer Mercedes Brossard they told me it's take al minimum 2 hoursto verify the problem, it's the first time when I call Mercedes Brossard (southshore of Montréal) before I fix my car on Mercedes Blainville (north shore of Montréal,very good service there), finally I will be at my old dealer maybe on Friday tofix the problem

iulianpopa

or somebody who know good place to fix electrical problems on south shore of montreal????

Plutoe

Repair center in S Montreal---are you serious----find a good baker, he knows how to fix that!!

PS---If you look up at the board you will find a post with answers to the P0500 question(Front R or L wheel speed sensor faulty)

iulianpopa

thanks Guys, I allredy saw the thraed, it's mine the thread, I will do the job by my self, keep in contact,

iulianpopa

so far so good,
I clean both off the sensors, left front and left rear, now I have just ONE code, P0500 speed sensor A (before was two)this is means I have to change one? I thing it;s the rear one?

iulianpopa

where is the conector for the left rear speed sensor????
I clean the sensor but I can't find the conector, thanks

iulianpopa

ok guys, check engine is gone, good clean off both sides sensors, but I still have the ABS and ESP malfunction,also the yelow light ABS is on , can I remove it by my self?
thanks

Eayacht

If you cleaned both sensors. I would try disconnecting the negative on your battery for 30 secs, maybe resetting the comp will turn the abs and esp malfunction light off

Eayacht

If that dose not work I would take it to a shop and have it connected to a computer so they can clear your codes. Last year I installed wrong size tires on my car and as soon as I drove out if the tire shop my abs and esp light came on. I drove back to the shop immediately and they switched the tires with the correct ones after that they had to Connect my car to a computer to clear the abs and esp codes

iulianpopa

thanks Eayacht,
I remove the ground for more than 60 secondes, but the abs and esp malfunction it's sill there, thanks for your help guys

Eayacht

Your welcome.
Well it was worth a try, guess your going to have to have the car connected to a comp, they will be able to clear those codes.
Post the results
Good luck !