I recently replaced the reverse light switch on the manual gearbox, since then they are stuck on all the time if you remove the switch and operate by hand it works ok. are their any common internal faults with gearbox
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert that has over 500 points.
An expert who has answered 200 questions.
Re: mercedes a class reverse light fault
The switch has been installed incorrectly or you got a defective switch.
also look at the connector of the switch, i fixed one no long ago where they plug the switch first and then they turn it to screw it in, that cracked the wires and were touching making the lights to stay on, i had to make a new wiring for the connector to fix the problem.
i do not thing you have a problem with your transmission at all
- 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.
run the fault codes to ensure that the EGR valve is faulty. Engine lights to not always come on unless there is something drastic going on with the engine /gearbox so that you can stop the car before damage is done.
sounds like it is in get you home because of gearbox failure if its the early box with metal sump check selector cable adjustment it critical as the J gate micro switches and the linear switch on the side of the gearbox have to be in sync with each other. on the other hand if it is the later gearbox with plastic sump, which i suspect it will be, check it has not lost some of its oil due to leaking sump, common problem! other wise check fault codes in transmission control module, any codes relating to incorrect gear ratio means internal falure most times
first.the mot is a govenment safety check,it is not a mechanical/electrical fitness test.so it passed an mot.....
now the gearbox W is for winter setting,it allows the car to pull away in 2nd gear and change slightly higher,NOTHING ELSE.
the gearchange has nothing to do with cruise control..or vice versa...
if the car wont go into/allow you to change then either its the selector plate or the gearbox inhibitor at fault......could go anytime.
Its a common and known fault on the Mercedes A140 unfortunately. Mercedes seem to have rectifieded the issue on later A series models but to my knowledge they have never admitted to a problem or had a recall on affected gearboxes.
It is unlikely therefore that you will get much joy from the dealers on this issue. Your best bet might be to source a replacement gearbox from a breakers or even better a reconditioned box with a warranty.
On the side of your transmission will be a switch with several wires
coming out of it. This is your reverse switch that turns on your
reverse lights and most likely needs to be replaced. The switch is just plug and play
If you take it to mercedes they will charge £3500 and will replace the gearbox, Alternatively you can change the shifter valve £25, new sump and filter as they have changed, fit a magnet inside the gearbox as the early A didnt have one. Fresh oil and see how you get on, the control unit for the gearbox sits inside the gearbox £1000 roughly for a new one but it has to come from mercedes in germany where it is coded to your chassis number, 2nd control units are not an option!!!!!!!