ECP,ABS and handbrake lights comming on only when raining and car goes on limp home mode,only one gear,car is automatic.i checked wiring to ESP/ABS module ,no broken or damaged.on diagnostics show code for CAN comunication lost for ESP/ABS module?
My 2007 ML 350 4MATIC recently showed the light after a heavy downpour at night. The wipers, electric seats, rear boot lock, indicators and central locking all stopped working. I struggled and finally got home but the rear lights would not go off when switched off. I took the car to the dealer the following day. After computer diagnostics, the dealer says there are traces of water in the rear right boot compartment that has damaged the rear Signal Acquision Module (SAM SYSTEM). The dealer bill is a whooping usd 2,000.00 in Kenya including sorting out the manufacturer's defect that caused the water leakage into the rear compartment!
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Brake light switch problem may cause the ESP / BAS lights to illuminate.
Common symptoms of a bad
Mercedes brake light switch.
Car stuck in Park.
ABS ESP ETS lights come on.
Can not move the shifter from Park to Drive.
Brakes Defective Warning on Instrument Cluster
Car won't shift gears. Stuck in 2nd gear, limp mode.
Brake lights don't work. (Brake light switch can still be defective even if the brake lights work. Checking the brake light operation is not a good test.)
ESP, BAS, ABS lights turn on. Car won't shift properly. Stuck in gear.
TEST: To test your new brake light switch: Turn you car off to reset the ABS light. apply the parking brake. and start the car in neutral or park without using the brake. if the problem is the brake light switch... the light will only come on when you press the brake pedal.
If you replaced the brake light switch and the light is still on you should check a few other things such as:
Fuses and Relays
ABS wheel speed sensor
Brake Fluid Level
Get an advanced scanner to read trouble codes.
NOTE: ** You may need a MBZ scan tool to reset the error code which was stored in the ECU because of the bad brake light switch.
WHEN YOUR VEHICLE GOES INTO LIMP MODE IT INDICATES A PROBLEM THAT NEEDS ATTENTION CAN BE TRANS OR ENGINE TRY TURNING SWITCH OFF AT A STOP AND GO AGAIN WITHOUT HOTRODDING IT. THERE ARE TIMES WHEN WIPING AROUND DANGEROUSLY IT WILL GO INTO LIMP MODE.
The ESP system means the Electronic Stability Program. If the ESP & ABS lights on the dashboard permanently the ESP & ABS system is faulty. You must access the ESP & ABS Electronic Control Unit (ECU) memory for pull out all DTC (Diagnostic Trouble Codes), using diagnostic equipment connected to the data link connector of the car (placed in dashboard, under a plastic cover above the ashtray). Then you will be full informed about bad pieces (e.g.: front right wheel abs sensor interrupted, ...). After bad pieces replacement you will be able to erase all faults memored by ESP & ABS ECU, in other words reset the ESP & ABS system and turn off the warning lamp on dashboard.
well.. the output speed sensor is the output side of your transmission speed sensor... these are horrible on merc's... easily replaced... but a pain to get the correct one.. and this sensor could cause almost all the problems you list alone... but with such low miles it may be a warranty item? as it is on your transmission...
I have the same car, same problem and I've been doing some research. It seems to be that the most common problem is a faulty ABS sensor that causes the car to go into "Limp Home Mode". Limp Home Mode is automatically initialized when the car senses that it has some sort of electrical or mechanical issue. This is most likely what your experiencing, because I, and many other X-type owners are as well. Good Luck.