Pe display mi-a aparut litera "F"

[cristianholdun]

Salutare tuturor!
Am un A 160 , 2000 , cutie automata & il am de 2 luni SH, 138000 KM .
Problema mea este ca ieri in timp ce urcam o costisoara cu masina plina la un moment dat nu mi-a mai tras & apoi mi-a aparut F pe display; am oprit am pus contactul mi-a disparut , am dat pe manual vit. 1 & tot nu a plecat dar de data aceasta litera F nu mai dispare. Am golit masina si am plecat dar cutia nu mai schimba.
Va rog sa ma ajutati sa inteleg ce s-a intimplat & cum pot sa resetez sa nu mai apara F-ul si cutia sa poata sa functioneze normal.
PS Cind pun maneta / R sau D smuceste puternic.
Multumesc!

[psiho200]

La ce spui tu cutia automata a intrat pe cota de avarie ,uleiul si filtru trebuie schimbat apoi vazut cu zmunciturile si socurile care tile da ,pune un schiener pe ea si spunem codu de eruare

[Daniel.]

Pe site la Lofty zice asa cineva :

100. 'F' appeared while driving home
Other Fully auto transmission information Q
I'm after some advice.
I've got a 1999 full auto A160, tonight on the dash as I was driving home an F appeared. Luckily I was just arriving home, as the car didn't have any guts to get up a slight incline......OK I have an existing problem with the alternator,,,,the alternator belt tensioner is knackered however still ticking along, I'm waiting for the part to arrive so the car can be repaired on Friday....do you think if the tensioner has completely given up this could be part of the F problem?

this owner has kindly come back with further information that may help other owners

Hi Lofty
I took the car into MB for a diagnostic check....mainly due to reading through forums and feeling nervous the car would be heading to the scrappies.
Fault stored was P1872 - Gear selector module......."fault is only stored at present and code was able to be erased, if fault reoccurs then new module is required"
They told me that the fault may or may not happen again, however had the fault been "recurring" as opposed to "stored" then a repair would be needed asap.

£73.40 including VAT for diagnostic. Module A1683701309/7088 £274.00
Follow up mail ,
The fault did re-occur see below and Paul ordered the part, however he asked for additional information.:-
Hi Lofty
Excellent info, much appreciated.
I picked up the unit today and was surprised at its simplicity of installation, the unit is held inside the cab by four setscrews and the other end is a push fit fitting onto something...all connected by flexi hoses, I thought from the drawing it was a series of rigid pipe work. Anyway the job I was getting done by my local mechanic today was a fix of a separate botched MB job.....so the gear selector module will be fitted for free by MB some time through the week, I'll keep you posted with any relevant info.
Just a quick question.....if MB give a false diagnosis which results in buying parts that they recommend will cure the problem then the problem still exists, what kind of come back is on the customers side......slight catch, parts not fitted by MB.
Thanks


R A S P U N S...de la Lofty :
Although I have heard of this 'F' displaying on many many cars along with the car going into 'get you mode' I'm not aware of what causes it and have never seen the reason printed. I communicated this to the owner in question.

Thank you Paul for the information dated 20/11/08


Paul had the selector module replaced on his car and mail recd on the 15/12/08 was that the problem was resolved although there was some hesitation for the car to change gear in some cases, hopefully this will settle down as the car get used to the driving style.

[Daniel.]

Sau ...

169 Type of battery and Auto Gearbox 'F' problem
Dear Lofty,
Why is a battery with vent essential on this car? Why wont a "dry" type battery do?

Also I am trying to solve the "F" problem on my 1999 automatic A160.
Tried cleaning sensors but after a week "F" re-occurred .
Put a new battery(dry) but problem didn't go away. What do you suggest?

R A S P U N S de la Lofty :
Thanks for your donation

The reason the battery is vented is because it is under the drivers seat, and so as all batteries when charged/discharged by the alternator fumes are given off which can be harmful if breathed.these are better off going out to atmosphere.

The ironic thing is that even dry batteries gas off, as they are discharged/charged. Dry cell powered electrical appliances quite often fail when the batteries contacts are exposed to the sulphates that are gassed off
This is normally dealt with by wiping the contacts of those cells off with a wet close which allows the residual power remaining in the battery to be reinstated. There are other factors as well, would for instance a standard alternator be suitable for charging a dry cell battery?
what size would that battery have to be to give you the Amp hour rating of the one required for your car? Is it available at reasonable cost?
With an Auto Gearbox it is most importaint that this rating is correct to ensure adequote power to the electronics of the Gearbox at all times.
The battery on my car is a chloride battery, where as not many years ago they contained sulphuric acid, in both cases the battery should be able to vent to atmosphere via the tube provided rather than allowing fumes to build up in the cabin of the car. if it is under the bonnet as with a number of vehicles then no problem.


Your 'F' Problem
Was the fault existing code stored on the ECU deleted, that way you will be able to see what's causing the problem.

Have you tried replacing the brake switch, this can cause the 'F' problem and only costs £10.00 from mercedes takes seconds to fit so it is worth a try before you delve to far . Also I take it you have read my page 59a?

I can't really add to your question over and above what is on that page, the 'F' problem is a very difficult problem to over come and find the cause for.
Brake switch, Selector module ( gear stick module) are two of the most common causes but unfortunately there are other more serious cause which require the GB to be fitted with a new Valve selector module which does cost a lot of money

Because your car is a 1999 you have no option but to go to MB or a MB independent Garage who will be cheaper and get them to do a diagnostics test , later cars can get problem codes using hand held diagnostics tools, yours has to be done on a 'Star' diagnostics tool. This normally costs £50. for a small test and £100 plus for a long test but inquire before you start investing in the cure because the bills can soon add up.

That should locate the problem and then you can look at the cost implications.
It may well be that your car still has the original auto gearbox fluid, if that is the case then it may well be that by changing the fluid the fault would be deleted but without a test it is very hard to advise, and even that job is not easy or cheap unless you have contacts in the garage trade.
I'd start with the brake switch, you have done the battery, and cleaned the infra red detector's? The diagnostics test apart from the Brake lights switch does sound like your next option.
I hope that helps .

Sper sa te ajute asta, in orice caz uite pagina intreaga cu intrebari si poti sa te uiti poate sa zicem ca am sarit ceva http://www.aclassinfo.co.uk/mypage.3.htm O zi faina !

[moisedan]

Cred ca era de ajuns sa dai link-ul catre pagina..................oricum site-ul este ffff popular printre posesorii de A class

[moisedan]

Cand pe bord apare F atunci cutia de viteza are o problema. Problema poate sa fie mecanica (cel mai simplu ulei) sau electrica. Cand a sesizat o problema cutia intra in mod de avarie. Asta s-a intamplat si la tine.

[cristianholdun]

Am pus tester-ul pe ea si mi-a gasit o eroare cu codul P1868 , mi-a sters-o si totul a revenit la normal.
Problema a aparut in momentul in care eu am fortat cutia (deci trebuie tinut cont si de acest aspect impreuna cu acest cod pentru interpretare)
Ce a indicat oare acest cod?
Ca pe internet am gasit diferite interpretari!

[LauLaur]

Am pus tester-ul pe ea si mi-a gasit o eroare cu codul P1868 , mi-a sters-o si totul a revenit la normal.
Problema a aparut in momentul in care eu am fortat cutia (deci trebuie tinut cont si de acest aspect impreuna cu acest cod pentru interpretare)
Ce a indicat oare acest cod?
Ca pe internet am gasit diferite interpretari!

Salut!
Eroarea P1868 este legata de fluidul de transmisie asa cum au spus si colegii mai sus. Masina mea nu are cutie automata si nu m-am intalnit cu asa ceva. M-am documentat un pic in speranta ca-ti pot fi de folos. Sper sa te ajute. Poti deschide si linkul de mai jos .... poate gasesti cateva raspunsuri.
Sa auzim de Bine!

http://www.benzworld.org/forums/w168-class/1198455-a160-stalls-cant-shift-gear-f.html

[cristianholdun]

Mersi!
Exact ce banuiam si eu!

[kezy]

Salutare ! Mi-a aparut si mie acest fatidic F !...Am fost la tester, iar eroarea vine de la circuitul electronic al partii de sus al cutiei (cea cu schimbatorul, din interiorul masinii...http://www.ecutesting.com/GEAR_LEVER_A_CLASS.jpg )
L-am gasit de cumparat de nou, dar trebuie personalizat special pentru masina mea...evident, de catre MERCEDES , dupa seria de caroserie a masinii mele WDB 1680331xxx... !
Intrebarea ar fi : stie cineva o alta solutie ? , ptr, ca costa destul de mult (1800 ron fara personalizare ) iar daca cumva gasesc unul de pe alta masina...evident la second-hand sau ceva de genul asta, acela probabil nu va functiona pe masina mea...!
Ce ma sfatuiti ? Va multumesc anticipat ptr. pareri !

[adic95]

La ce spui tu cutia automata a intrat pe cota de avarie ,uleiul si filtru trebuie schimbat apoi vazut cu zmunciturile si socurile care tile da ,pune un schiener pe ea si spunem codu de eruare

Cu ce nota zici ai luat bacu la limba romana ????
...asta daca l-ai dat.

[kezy]

Salutare ! Mi-a aparut si mie acest fatidic F !...Am fost la tester, iar eroarea vine de la circuitul electronic al partii de sus al cutiei (cea cu schimbatorul, din interiorul masinii...http://www.ecutesting.com/GEAR_LEVER_A_CLASS.jpg )
L-am gasit de cumparat de nou, dar trebuie personalizat special pentru masina mea...evident, de catre MERCEDES , dupa seria de caroserie a masinii mele WDB 1680331xxx... !
Intrebarea ar fi : stie cineva o alta solutie ? , ptr, ca costa destul de mult (1800 ron fara personalizare ) iar daca cumva gasesc unul de pe alta masina...evident la second-hand sau ceva de genul asta, acela probabil nu va functiona pe masina mea...!
Ce ma sfatuiti ? Va multumesc anticipat ptr. pareri !

Stie careva dintre colegi sa-mi dea vre-un sfat ?...Vreo solutie ?
Va multumesc !

[cl600]

Stie careva dintre colegi sa-mi dea vre-un sfat ?...Vreo solutie ?
Va multumesc !

Daca esti sigur ca trebuie schimbat, cauta unul second si transferi datele din al tau in cel nou.

[psiho200]

Cu ce nota zici ai luat bacu la limba romana ????
...asta daca l-ai dat.

Cite odata in viata nu dai atentie la tot felu de nimicuri ,dar aici parca trebuia sa vorbim exclusiv de MB nu sau ma insel eu sau sint si profesori de gramatica astanu stiam SCUZELE MELE chiar sint masterand in psihologie bacu lam luat de mult .Asa ca domnu VIP iartama am gresit suport consecintele DAR CRED CA MAI AI DE TOCIT BANCILE SCOLI