no abs module anywhere to be found, like it had vanished from the car.Ĭalled the aa because I thought it was dead, engineer arrived, disconnected the electrical connector on the module, reconnected it, no problems, drove it 40 miles home no problem.ĭrove it again the other day, same as above, disconnect trick worked this time to get me home so I started looking for help online, came across this thread and I’m so grateful people have had the same problem and switching the module out has worked. This happened randomly over the next few days until the day I was taking it to my friends garage and the “off on trick” didn’t fix it, tranny wouldn’t select a gear so it won’t budge on a main road. Switch car off and back on, everything went back to normal. drove it to work the next day, boom, esp faulty visit workshop, brake wear (made me laugh) visit workshop, display faulty visit workshop, no speedometer, locked tranny in whatever gear it had selected. Then over Christmas whilst trying to remove the right rear brake calliper, thread stripped on the wheel carrier, someone over tightened it and coated it in thread locker, argh.Īnyway fast forward past 2 months of hell getting the wheel carrier off, snapping the wheel speed sensor mount and having to cut off a few suspension arms in the process, it’s all back together now, new sensor and arms fitted.
Had the car over a year, done less than 2000 miles as it was a project, never had a problem with it. Just joined as I’ve been reading this thread and a couple of others since I have this problem on my 2004 clk500. Now, I'm thinking that if the front left wheel feeds the signal to the speedo then it's a either a problem with the sensor (that checked out fine) a problem between the sensor and the ESP module or the ESP module itself (or another earth?) however, this time it was just one malfunction on the display - ESP - Display Malfunction, the speedo stopped and all three brake/ESP/BAS/ABS warning lights came up as before. each time I stopped, switched off, switched on, fault gone, drove off and the fault was back in a few hundred meters. On the next drive it was fine for about 5 miles then threw the fault 4 times in 2 miles. is the earth for the ESP/BAS unit within the multipoint connector? all very clean and shiny and no sign of heat. I can't see an earth connected to the ESP/BAS unit and replaced the nearest corroded earth anyway. My next thought is the ESP module although another mechanic has suggested it could be a bad earth. Took it out for a drive and it is still playing up as before. So, the wheel sensor has been replaced, the toothed wheel has been cleaned (as best as possible) and it all checks out fine on an ohm meter. also, is it possible to test the circuits into the N47 (ESP) with the 'scart' connector using a multimeter? and would that help at all?Īny suggestions would be much appreciated as this is annoying the hell out of me and as you can tell, I'm not much of a mechanic. I will also pull the relay and see what that's doing (is it ok to manually close relay to see if this takes ESP warning light out?). So, any help on where the best places to check for a bad connection/earth would be much appreciated. He thinks this could be creating the CAN bus problems. The indy chap who does my other car and has been excellent thinks its more likely power to the N47 or bad earth somewhere. (current and stored)Ĭ-1000-016 - Check control Unit N47-5 (ESP and BAS control Module) Check Power supply of component N47-5 (stored)Ĭ1025 - No or incorrect CAN message from control Unit N47-5 (stored)ī1101 - Fault in CAN communication with control Unit N47-5 (stored_ī1110 - Communication through the interior CAN bus is faulty (current and stored)įrom codes MB indy chap thinks it's more likely a CAN bus problem (shorted wire etc) than a faulty N47 and suggests a few hours chasing bad wires before going for a new ESP module (sounds pricey to me!)
P1876 - Signals sent by control unit N47 for the wheel speeds and braking torque are not available on the CAN bus. front wheel speed sensor changed and all wheel speed sensors checked and working on a ramp with STAR. could be 20 miles, could be 20meters.įaults started after having exhaust welded and front suspension looked at for knocking. Stop and restart and the fault clears but reoccurs whenever it fancies. When driving, ESP warning comes up, speedo and milometer fails, and locks in whatever gear it was in when fault threw.
I've had a recurring but unpredictable fault on my 2000 W208 for about 2 weeks. Hi, I'm looking for some advice on where the best places to look for poor earth/connectivity to the ESP module might be.
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