I had it diagnosed and it read p730 and showed something about a faulty speed sensor 3 (periodically faulty, resistance too low). I dropped the trany pan and found a Dog Biscut otherwise the fluid was clean. I have changed the following: 13 Pin Plug on Transmission Base Start the car and drive to see if it is out of limp mode. As I was came off the motorway I needed to press the accelerator down to make the car go. 2. Much appreciated. Verified Hi again, a P0715 is a transmission speed sensor fault. It smoothly glides between the first and second and vice versa, but it just stays . What do you suggest? Air pollution (sighs)! What do you think guys? I switch the car off.. start it again no problems smooth.. however if i press the brake pedal when i start the car it happens.. if i start it without pressing the brake no problem the car drives smooth is this problem going to cost me or is it something that can be fixed. If it was me I would check some of the things you see in this article. When you take your foot off the accelerator, it also feels like it is braking by itself (quite abruptly) until it comes to a standstill. Good luck. If not you most likely have a bad shifter module. 32 helpful votes. I am assuming you have read all the codes with a multi-system scanner. Note that these work on 1996 and newer MB cars. You are lucky! is it worth the money to fix at all ? Fluids were checked (ok) So after about 40,000 miles and eight trips to the service department, my 1999 E430 Sport was already on its second shifter, its second valve body, its third torque converter, its fourth complete transmission, and its sixth EGS control computer. You want to start with the most common and least expensive problem. MB transmission are generally bulletproof with the exception of a few minor issues. The next day it will do the same thing. Yes a TCU need to be programmed to your vehicle VIN. If you dont have a manual download it here:Mercedesmedic.com/ownersmanual/. Your email address will not be published. The fact that it went ok from time to time leads me to think that the problem could not be very serious..and yes.., getting into reverse and 1st goes with that thump each time. You will need Dipstick Tool for 722.6 722.9 Mercedes-Benz Transmission for measuring fluid level. Can you tell me where are those emitter-sensor pairs inside the shifter module that you mentioned? If your Mercedes-Benz is equipped with the 722.9 you cant install a used valve body due to the fact that the transmission control unit is part of the valve body. Re-soldered and reinstalled. Then got up the next morning and start idles shifts all colum and the gears show in dash. At cold start there is a slightly hard shift from first to second. Then I ordered the conductor plate and replaced it with the new transmission oil but still no luck. Did you replace yours with a new one or old unit. if i do this would i have to get it coded to the vehicle?? Hi Susan. Get the fault codes from the transmission control unit. What do they look like? Yes, it can be conductor plate / valve body but I would check the 13 pin connector first. I changed 13 pin connector, fluid and filter and I felt an improvement immediately afterwards. Pull over and turn the car off. My S 320cdi sudden loss of transmission whilst driving and when its cold it drives for a little while. i have changed the oil and filter but still the same. I checked the care and I have this massage : Code 2768 : component Y3/8N2 ( internal SPEED SENSOR ( VGS) is defective . Its not really that common. Could be the reason why you have no R. Lastly, ensure that the transmission fluid is correct. First of all, I dont think you have a major issue (meaning I dont think you need a new transmission). These are independent shops that will take your old 722.9 transmission control module and try to repair it. Any help would be greatly appreciated. Any ideas would be great. This will allow you to drive the car again instead of towing it. Since then, the ABS/ESP inoperative message has never gone away. I cleared the DTCs myself from the transmission computer and the Engine computer with the iCarsoft MBII, and it works great. This is a mercedes 2007 E350. Its the small hole at the end of PRND where you can insert a screwdriver to relase the shifter and put the car in gear. It depends on how many miles and what is wrong with it. It is hard to say without properly diagnosing it. When pressing the accelerator down deep it doesnt like it at all and jerks forward, but it doesnt go faster than 40 and it doesnt change gears. What are the possible causes and how can it be repaired ? Parked the car for 15 minutes. I have the same exact model and its doing the same thing. Thanks. When it senses a gear change is required, the computer sends an electrical signal to activate the corresponding solenoid in your transmission, which opens the solenoid and allows transmission fluid to flow through it, which supplies pressure to the bands that shift your car into the requested gear. Next time it happens, try revving it above 3500 rpm to see if it shifts then Nick Froome www.w124.co.uk television Always remembered RIP Joined Mar 14, 2005 Messages 164,073 Reaction score 347 Age replaced connector and conductor plate with no success. What is your advice on how to go about diagnosing this problem? Unless you have over 200k miles then it could be bands / internal wear. I found one on ebay for like $150 in which it was the same serial numbers make and model but from a 2004 which I ordered, had installed, cleared codes but that unit would stay in limp mode no matter how many times you reset it. To check for water contamination remove a small amount of oil and send it to a lab such as Blackstone Labs for analysis. I changed the fluid, filter, 13 pin connector and checked the fluid level according to the instructions on this and other MB sites. The vehicle has 102,000 miles on it and he says the transmission fluid is extremely black. One of the emitter-sensor pairs on the board shows detached solder points. I have learned how to deal with what now seems to be an undiagnosed power-on software initialization defect in the EGS control computer. Switch off engine and start again.. all back to normal. Correct the level and clear the codes. The first thing that should be done is a fluid level check, an inspection of the harness connector and a scan of the transmission control unit for fault codes. Shifter stuck in P. It may also be the shifter module itself. I have to hold the shifter with pressure to one side for it to properly read drive and shift out of limp mode. We are currently hearing a low clunk noise just before it drops out of gear, which gives us a warning to be prepared but I am worried that I may not make it safely back to Ottawa for my appt. -at times the car will go for several trips without having it happen, and others it will happen on every stop of my trip So I suppose this means transmission is going in limb mode. GetanOBD2/CANscanner that also reads transmission codesand check the engine/transmission codes. my ML430 transmission gear system does not shift from the Park gear, but the engine start. Thank you ! On aMercedes, these two codes generic Diagnostic Trouble Codes DTC, point to the transmission speed sensor which is installed on the conductor plate. Full MB control unit diagnostics. The 5-speed transmission that was used between 1995 up to 2008 is one of the best transmission ever built. Problem solved for less than $20. I think you are talking about the magnet thats in the pan. My 2008 A-class 170 Auto (88,000km) recently gone into limp mode. Over 35 years experience. This morning it happe again. Can you check your radiator brand? Take your MB to a shop with Star Diagnostic and they should be able to figure it out. My Mercedes ml270 automatic is stuck in first gear Posted by Charlene on Jun 16, 2014 Want Answer 0 Clicking this will make more experts see the question and we will remind you when it gets answered. After overhauling my 722.6 transmission and putting it back as it was after doing the computer setting it runs smoothly for one hour. Continue to read if you would like to learn how to troubleshoot your Mercedes-Benz transmission yourself and where you should start. Replacing the valve body can per perform with the transmission in place. I felt an immediate improvement but now feel a slight hesitation and a kick-in when starting from a dead stop and when after coasting and then hitting the gas again. I didnt do that. (. Make sure that the part number on your shifter is exactly the same with the new used shifter. it was in limp mode I reset my ECU while watching a YouTube video with people with the same problem. 3. Im using a C320 2003 Model which has been on limp mode for a while. Mercedes has released updated parts; the . Burning Smell Now after your ears, your nose will be blessed with a peculiar burning fuel smell coming from the vehicle's engine. I would buy a used cheap IC and install it for testing purposes. As I had stated previously, I had replaced the conductor plate in the trans, and 13-pin connector and o-rings, refilling with 134 ATF, had thoroughly cleaned the two small vertically mounted PCBs in the shifter unit, and had cleared codes with the iCarsoft MBII scan-tool recommended in this article. Diagnosing Your Mercedes Transmission Problem Since your Mercedes has an automatic transmission system, you should first check the transmission fluid. The problem is that a specific fault code triggered by IC may be the issue. Use the correct type of transmission fluid. Any advice would be appreciated. Do not press the gas pedal or any other buttons on the car. Do you hear one? I am planning to replace the connector, valve body, filter, AFT and perhaps the solenoids??? Im a little hesitant. Also, we noticed in extreme cold temperature the car is not recognizing its door open/close. May need to look at the bottom of the radiator. Of late two messages also appeared (at the same time) on the small screen. It refers directly to the Instrument Cluster. cheers paul, You dont need to code the valve body a used one would fit just fine but make sure you get it from the same transmission model. 2. If your Mercedes is in limp mode, dont panic. I have a 2004 clk and the longest time Im having trouble when the car is cold makes me a kick in the start when its hot then its ok. Hi Mercedes Medic the first tie this happened last night I thought I hit something but it was the vehicle just jerking. They are affordable and can access most of the systems on your Mercedes-Benz including Airbag, EPS, ETS, Transmission, Engine, front and rear SAM, SRS, brakes and a lot more. 1 people found this helpful. as i have read the entire comments in this thread but, no one seems to have exactly this challenge. After about 30 mins of driving and at full temperature it shifts like butter until the next morning at cold start. Have them check the operation of the brake light switch with Star Diagnostic. Another instance could be the automatic transmission won't shift into 3rd gear at all. Trouble moving from "drive" into . Very helpful information. Need help! Mercedes Transmission Problems, Limp Mode, No Shifting: Troubleshooting Tips. Dont forget that first warning! 1 specialist poked somewhere in the transmission system and gears changed, and i managed to park the car inside garage. Excellent article, very helpful! Now fast-forward to 2018. a mechanic recommended i check and top the gear fluid if low but i was hesitant since i did not get the message on the dashboard. The car is running ok now (only driven it a further 5 miles), except now when coming to a stop, it seems like the gear changes down too soon and I feel a very slight jolt with downward gear changes. Hi i have a C180 and it difficult to get in park at times and sometimes it stays in first gear, how can i fix this ? Please. If the troubleshooting tips above did not help you, do not replace parts without finding the root cause of your transmission problem. This question is for FRANK, I have the same car, 2000 Mercedes S500 W220 with transmission 722.633 (5-speed) with shifter problems. Every morning when I stat to drive the first shift has a quite a kick. Well dipped pan today and change filter.still operates the same. Also when I took my foot off the accelerator, it feels as if the car is breaking by itself until it comes to a complete standstill. Please help? I opened 4 times the shifter module, cleaned the oil and corrosion with electronics parts cleaner, double check solders and capacitors, etc. A proper diagnosis should be performed to figure out this problem. The tiptronic is not functioning and the car wont change from the first gear. On clock it showed D but car still wont go. You will get a fault code which will point you in the right direction. Also, check for corrosion of ABS unit connection/wiring loom plug. Hy..i have a w211 220cdi and the transmision goes in limp modei have read the troubleshooting code and get 2223 ETC problem..somebody says to me that mean be the shift selector from inside..can be these?? Stop, switch off and start again and all is back in place. There are altogether 4 reasons for that. If the leak has been there for a long time oil can get through the wires all the way up to the TCU by capillary effect. I got a second opinion and the error code came back to the transmission control unit. I have a 2002 E320 4Matic. Save my name, email, and website in this browser for the next time I comment. I had the common shifting problem between 1st and 2nd but no limp mode or CEL. Any ideals. An alternative solution is to try a Mercedes-Benz 7G 722.9 conductor plate repair service. Thanks. Ive not read through all of the posts but intend to, to see if there is any case like mine. Even though the coolant and the transmission are running in the same radiator to be cooled they have separate chambers. Thanks, I HAVE MERCEDES C220 96 MODEL AUTOMATIC We would be guessing in this case if we told you to change this and that. Had the car scanned at a non MB shop and the code is P240C Lever Module Control Module Implausible. with Mercedes dealership back in Ottawa and it is quite a distance (5 hrs.) Its a computer boot-up/initialization problem, and Im told they all do it. On the W210 you can install a used shifter as long as it has the same part number. Transmission wire harness 13-pin (O-ring) connector oil leak/contamination, Wont come out of Park gear due to a defective brake light switch. Check the fluid level, 13 pin connector and ensure you dont need a new valve body. Make sure that is dry. Engaging D or R is now clunky but previously was silky smooth. W203 Automatic - Stays in first gear Electrics, . Please Help. Any clues appreciated prior to major spend model year 2007. Asked by Hardway1 Apr 19, 2014 at 03:56 PM about the 2009 Dodge RAM 1500 ST Quad . It should be a dark red color. 1. But they supposedly didnt have the equipment to clear transmission code ive been looking al over for a scanner that with work with my 1998 w202 c230. Brake Light Switch If your transmission is stuck in limp mode,DONT PANIC. Diagnostics was done and fault codes cleared A local repair shop had the trans pan off to fix a leak.That is when the 1rst gear problem appeared. Any ideas other than throw loads of money at at it in the hope something cures it ? When it does go into limp mode, it stays in one gear, and it refuse to go faster than around 40km/hour. The car jerks when moving from park to drive also. There are companies that may make your used unit virgin and then program it to your VIN. You canget a conductor plate herefor less than $200. ), and downshifting the same way to avoid the problems. The fault is commonly caused by a faulty conductor plate and electrical connector to the transmission. Sir, my C180 Mercedes automatic transmission wont shift from first gear to the second gear. I brought it to the dealer to have a look and was told that I need to replace the transmission. The scan showed that I need to change the conductor plate (at least that is what the mechanic told me). Ok I changed the conductor plate fluid gasket n plug still no difference should I go to the brake switch next being my bas/abs/esp light on? This is what happens: -once in a while (seems totally random) when I stop the car my transmission wont go past N, I can only put the shifter on D or N, but its stuck there and wont let me move forward to R or P Check out our article onTop 10 Best Diagnostic Scanners for Mercedes-Benz troubleshooting. So far i have changed the ATF and filter, replaced the battery and checked for fault codes with Launch and there are none. The problem with this car is that since it arrived here in South Africa, it could only shift gears from park, reverse, neutral and drive first gear. Because the screen wash reservoir filler neck is directly in front of the ABS unit, water can get into the electrics if the owner hasnt been careful, and over time the connections can corrode. 2. If I engage 2 times in D & R after morning first start the kick is much less. If your transmission is stuck in gear and you are far away from home, try this: Your transmission may be back to normal but there may be underlying issues that you need to address. In turn you may be causing serious transmission damage. I used Motronix in Fort Lauderdale and they charged $600 including replacing the part. Do you know if there is another chassis I should choose that would work? You will have to look down there. You will need this specialdipstick though to measure it correctly. Very few Mercedes-Benz cars have had complete transmissionfailure and require transmission replacement. I even have pictures of the electronics board. If your Mercedes-Benz automatic transmission gear selector is stuck, you can manually move the shifter from P to D (or D to P) using the shifter override feature found on almost all Mercedes-Benz models, including E-Class, C-Class, CL-Class, ML-Class, SLK-Class and other models. Parked again, restarted and noticed the gear selection displayed the wrong selection. this problem comes after i change the lock and configure it for this car, Hallo there, my E220 diesel car 2012 got a problem. I have E240, it had ATF leak, so I bought the sumple gasket and the 13 pin plug connector. Keeping my fingers crossed that was the extend of the problem. Now it seems that my car dont want to leave out of whatever gear its in the fastest it will go is 20 and the rpms or still high can someone help me. hi guys See if that fixes your problem. and a kick when the transmission finally shifts up. Remove the shift knob by turning the chrome lock 1/4 turn and pull straight off. Replaced the plug, car ran fine but I just noticed it is still leaking. Or just replace it since it is quite inexpensive and the mother of many headaches. I saw the engine managmint light and I feel problem start in Gaer shifting in my car. After a day it got back on the limp mode. In this article, we discuss the most common Mercedes-Benz transmission problems and how you can fix some of them. Is your engine check light on? Once you do that, in some cases the car will go out of limp mode right away. Thats great! Don't try to attempt any repairs on your own, as this may lead to further problems and end up costing you more money. 5 4 4 Doors 5-speed shiftable automatic Air Conditioning . The shifter module will need to be programmed to match the VIN of your car. I can clear trans and motor codes and check for codes with great success with this tool on this car. Including Engine, Transmission, ABS, Airbag, SRS, SBC Brakes, ESP, EPS, Air Suspension and more. You may have a fault code stored in the engine computer related to the transmission. It continously shows fault code B 1021. my thoughts are to change the 13 pin connector and get a used tested valve body and conductor plate. Remove the key. On that model year even removing the cluster shouldnt send the transmission in limp mode. i inspected harness and looks fine on top and bottom at both connectors. Another reason the automatic gear shift stuck in park could be a problem with the brake switch. 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