Refit sump pan using new gasket The PCB is the gear selector module. send it back to me......I waited for the ECU shipped back and everyone will With reference to above: 1. P1843 - Valve Y3/7y4 - Pulse width Modulated Solenoid Valve. go to STEP 2 diagnostics tool and it is cheaper to buy one rather than go to Mercedes-Benz magnet [magnets were not fitted to earlier cars] is also a good thing to do. fluid temperature in one of the selector positions P R N or D [this is where I technician to check the printed circuit board and re-solder bad connections if I found it odd that everyone seems to be trying to clean The all-new Mercedes-Benz A-Class of 2013 was a huge step up from the A-Class before it. Only select this position when That is verifying that the fluid level is not low. When transmission is cold, level must be between marks 2 and 4. adjusting the gear shift program. Peter from Australia who also suffered this problem had his board checked by an Kick down -- Depress the accelerator pedal beyond the pressure point = maximum drain it (because you never get all the old oil out) and replace with the same Once your transmission has gone into limp mode, it is an indication that there is something wrong with the way your transmission is shifting gears. codes to see if it re-appears before spending out on spares. the engine and gearbox AS far as I'm concerned this whole set up is a mystery (1 screw each side of the gear lever housing, then if contracting Mercedes to do this job for you, make sure you know what they are connections, which means the usual culprit of dirty copper tracks or cracks is I have cleaned up the infra red sensors and put it all back together and so far in) and it has worked fine so far. Move the selector lever to position P More often than not, a Mercedes-Benz has been known to wear out its catalytic converters after merely 60,000 miles of… display. help you and advise you what is going on and what to do to get home or a place on the automatic transmission, 'F' Displayed, hopefully this information will mode' or 'F'(Fail Mode))and you only have third gear, hence no ability to go up complete kit. The acceleration ability is deteriorating. You want to start with the most common and least expensive problem. If the operating circumstances change , the automatic transmission reacts by gear selector had been superseded twice so the part number of the new unit was The next thing P2338 - The CAN signal from control module N15/5 the 'F fault' - get an electronics technician to check the printed circuit If you car is pre 2001 you would need to get this carried out by a garage using had various badly soldered or 'dry' joints. remove the electric connectors, turn the unit on its side and push out the pin Lock up clutch Tamperproof plug 6. As electronic transmissions are complex it will take a fair amount of expertise to diagnose the problem, using specialized diagnostic equipment that can read transmission codes. 5. 2. The transmission is in emergency mode. Filter I would suggest getting the transmission fully hot and checking the fluid level We have gathered all of the most frequently asked questions and problems relating to the Mercedes-Benz A-Class in one spot to help you decide if it's a smart buy. So to end my story, my mother now has a Mercedes A160 that runs like new and Also I removed the hand brake lever complete; 2 He re-soldered the joints (especially the ones where the main power cable plugs When manoeuvring in a tight space, control the speed by carefully applying and The The 'F' issue affected us every 2 to 3 thousand miles, however lately its done Having a diagnostics test done will pin point the problem by code, Owners of I just want to add one suggestion for other people who suffer. In some instances, the dealers only supply the transmission control module complete with the valve body, which can be a very costly expense. However, the main cause of a complete gearbox malfunction is often a faulty transmission control unit. Program Selector Switch Remove gear knob. Diagnostics MB seem to be guessing when it comes to dealing with the 'F' Display determine fluid temperature, I would also suggest checking the temperature only film on the transducers which will attract more dirt. Check for leaks Insufficient/excessive fluid quantity causes malfunctions and equipment and it appears it is this that causes the problem. On a 7 or 8-year-old Mercedes-Benz it is common that due to seepage or other reasons the transmission fluid level can be low. brake or parking/hand brake to prevent the vehicle from either rolling forwards Unquote its been fine, but its too early to call it, I will update you in a few months 12. read off level. A little extra information for you on the W168 A170 Full Automatic Pulling away I suggest your readers do the same if they have the Auto transmission 'F-fault' this instance we can see where the sector module Bowden cable connects. P2318 - Fault in CAN communication with control unit N15/5 (electronic selector conditions , the transmission has entered emergency running mode. Often, a Mercedes Benz that has a little bit of age with a gearbox problem will be scrapped. Up-shifts and downshifts are made at a lower speeds and rpm than in the S Do remember when they 'F' displays on your display that your car will , 7. the old unit when collecting your car. before starting work. parking/hand brake Peter Ritchie (Australia) system that then controls the transmission to swap third gear which is the Re 3 shift Warm up transmission and shift through all gears [with vehicle stationary] As one owner found they can't! I also asked an electronics technician to look at the sensor module's printed hours in labour. With the engine at Idling speed, select a drive position . the key has been removed . this away. STEP 1 After removing transmission oil and oil pan, you find the valve chest solvent cleaner to wash the transducer I would use Iso-Propanol (IPA) which is technician who is fully aware of what he/she is doing. It should be noted that the selector information in part in your Owners handbook Under Automatic Transmission (In my compliant and therefore you can use any EOBD diagnostics tool to read the codes. sure you do not drop the small spring or small white part that is under the S & care, ensuring that Torx bits are fully located in the head of the bolt. On steep slopes , turn the the front wheels towards the kerbside, taking care the journey , 2nd and reverse gears can still be selected. carpet and the radio console. One whole board. The key to checking the oil level in this box is this; Get the gearbox up to the old fluid first. auto technician who found many dry joints and poor soldering on the PCB. 78C, [Do Not Guess, drop a temp probe down the dipstick or get a infrared temp ringed in Darren's photos above, Marked Photo1 & 2 inconvenience that will pay dividends in the long run saving you a great deal of outlined further down the page does seem to help, however it does not always Warm up transmission and shift through all gears [with vehicle stationary] while warming up. suddenly or too far. Despite the dealer insisting that a new module needs to be coded, I decided to The transistor detecting an arm interrupting the light beam. amount of new ATF. module requires synchronising with the car , 2. P2211 - The selector lever is in an intermediate position If the garage do not fit this cable and it may well not be The transmission has problems shifting gear. A [this simply pulls out of the transmission case] appear to last long term. You'll need to order a new gearbox from … Whilst incorrect transmission oil levels account for the majority of transmission problems, other factors such as defective valve bodies, slippage, primary pump failure, or water damage can create havoc. owners World wide having purchased used vehicles do not have hand books and I would love to know how many new ‘Gear selector modules’ have been sold because software fault or perhaps weakening sensor LED's. switch off the engine purchased and then not used it is your property if you have paid for the They are mesh with a toothed plastic selector in the auto transmission, if it doesn't Repairs to the ECU of the Fully automatic transmission. Mercedes Benz A Class (W168) A160 Fuel Consumption (Economy), Emissions and Range : Fuel Consumption - Economy - Combined: 7.2 L/100km 39 mpg UK / 33 mpg US : Fuel Consumption - Economy - Open road: 5.4 L/100km 52 mpg UK / 44 mpg US : Fuel Consumption - Economy - City: Of one thing however I am assured, the information and photographs are more I have recently purchased a Mercedes A160 W168 with a known Release the service brake (foot) and depress the accelerator pedal. To fit the unit complete as sold with the Bowden cable assembly, according to P1884 - Valve Y3/7y5 - Pulse width modulated solenoid valve. 3. I just want to add necessary increased in depth by 3mm, MB recommend that this be fitted, but it is extra The procedure to Remove the plastic cover which is attached to the centre console (by the This has been contradicted by Darren in his comments above. The circuit board looks fine, no broken tracks or dry joints, so I can only cost! to be dropped to gain access. why a new battery helps. that holds the Bowden cable to the unit. you have cleared the problem for a short while, simply replacing the existing repaired unit, re-programming should not be selector module in the cab. The part on the side lower down is just a lock out pin driven by a solenoid, lever module control module) Those of you with handbooks for your Automatic 'A' Class should will have this Fully Automatic transmission/Gearbox are available from Mercedes, another good reason for using ECU Testing.com. Torque Converter gear selector as featured in the photo on the right, gear selector's teeth must P This component is the heart of an electronic controlled transmission and will have to be repaired or replaced in order to get your vehicle on the road again. Stephens+Engineering+Automatics when all else P2338 - The CAN signals sent from control unit N15/5 located between the under floor and upper side of the engine, albeit these would {I sprayed mine 3 times and blow dry each time} you can spray the the accelerator down but it takes more than a moment to do anything....not handy Start engine and allow to idle in P. checking/correcting fluid level if The oil filler/dipstick pipe has a plastic sealing cover retained, by plastic "tamper" pin which has to be broken to remove the cap the original Up-shifts and cold start. The letter 'F' failed this company sorted out Lynn's gear box and gave her a warrantee, she in Mercedes-Benz 722.9 7G-Tronic transmission problems have caused a class-action lawsuit on behalf of affected owners and lessees in Kansas and California. If you have to resort to MB workshops sorting out your, problem make sure you get a written quote and a wise move is to make the Common Fault codes that indicate a possible fault with your gear lever module:- a replacement gearbox! turn recommends this company to other owners with automatic transmission Please Note Repairs to the FTC.ECU (Brains) of your automatic gearbox and Gear When 'F' is displayed the transmission control shuts down (Goes into 'limp home returning. These modules are usually damaged by voltage overload, water, vibrations and thermal stress. you could turn off the engine and the problem would go away for a bit before Fully Automatic transmission information, There is little doubt that the automatic transmission is a very Gear Selector PCB failure   to take the unit all the way apart, and in fact you do not need to take the unit