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[Auto Addict]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

[Doctor Gollum]

Check the menu settings  might have inadvertently unticked an option

[Auto Addict]

Check the menu settings  might have inadvertently unticked an option

No Menu settings for it, funny thing is neither have worked all day, until I just drove home from somewhere, both were working OK.

Wondering if battery voltage was low

[Doctor Gollum]

Also possible 

[tunnie]

2014 E Class I used, Aux battery was dead and main one not in great condition, hold function still worked fine.

Have a code reader?

[Auto Addict]

2014 E Class I used, Aux battery was dead and main one not in great condition, hold function still worked fine.

Have a code reader?

Yes, I've got a code reader, obvious thing to do really

[biggriffin]

Got hill hold, on this Volvo, it's bloody useless, switch it on, get to traffic lights on slope, engaged--- then the bloody thing dis-engages... Sod it use aux-trailer brake.

[Marks DTM Calib]

Its a function of the ABS unit so make sure you check code status in that module

[Auto Addict]

Its a function of the ABS unit so make sure you check code status in that module

 

[Auto Addict]

The good news is - no fault codes.

The bad news - battery voltage low.

[tunnie]

The good news is - no fault codes.

The bad news - battery voltage low.

Put it on a trickle charger overnight, see if it fixes problem?

[Migv6 le Frog Fan]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

A brick.       

[Kevin Wood]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

A brick.       

.. or one of those antiquated lever things between the seats - that never seemed to go wrong.

[Nick W]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

A brick.       

.. or one of those antiquated lever things between the seats - that never seemed to go wrong.

They do, but a seized or broken cable is easy to diagnose and cheap to fix.

[Andy B]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

A brick.       

.. or one of those antiquated lever things between the seats - that never seemed to go wrong.

Have you looked inside a Merc?

 Merc has used a US style foot operated parking brake for a good number of years. 

[TheBoy]

Merc has used a US style foot operated parking brake for a good number of years. 

If they hadn't done away with designers, that would be easily fixed at the next facelift/model

[Andy B]

Merc has used a US style foot operated parking brake for a good number of years. 

If they hadn't done away with designers, that would be easily fixed at the next facelift/model

I quite like it there ..... it frees space up in the middle for something else & besides .... I rarely use it anyway. 

[Auto Addict]

Looks like it was caused by the aux. battery being low, seems fine now

[Marks DTM Calib]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

[2boxerdogs]

The brake hold has stopped working on my C class.

Anyone got any ideas please?

A brick.       

.. or one of those antiquated lever things between the seats - that never seemed to go wrong.

Have you looked inside a Merc?

 Merc has used a US style foot operated parking brake for a good number of years. 

.   





My E class has this very simple to use & never had any problems with it

[Doctor Gollum]

They're a bit of a fiddle with a manual box, but are tried and tested

[STEMO]

So....how would you do a hill start if you need a third leg to let the parking brake off as the clutch bites?

[STEMO]

Ah......'hold' system......I see.

[Andy B]

So....how would you do a hill start if you need a third leg to let the parking brake off as the clutch bites?

You only put the brake ON with your foot .... there's a hand operated release handle 

[Andy B]

Ah......'hold' system......I see.

yes ..... your left foot 

[STEMO]

Ah......'hold' system......I see.

yes ..... your left foot 

That's right...the one you use for the clutch on a manual 

[Kevin Wood]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

[Andy B]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

[STEMO]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

I still don't see how that would work in a manual.

[Viral_Jim]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

I still don't see how that would work in a manual.

Left foot on clutch, right on the noisy pedal. Find the bite point and pull the handle on the dash that disengages the "handbrake".

The two downsides (on the merc van I was using at the time) were that it was binary, so if you didn't have enough bite on to hold the van, you'd better get on it quick as you're rolling backwards  . And it made a lout "pang" noise when it disengaged.

Not as good as a proper handbrake on a manual car imo, but fine on an auto.

[STEMO]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

I still don't see how that would work in a manual.

Left foot on clutch, right on the noisy pedal. Find the bite point and pull the handle on the dash that disengages the "handbrake".

The two downsides (on the merc van I was using at the time) were that it was binary, so if you didn't have enough bite on to hold the van, you'd better get on it quick as you're rolling backwards  . And it made a lout "pang" noise when it disengaged.

Not as good as a proper handbrake on a manual car imo, but fine on an auto.

Thanks, Jimmy 

Pang?  Or paaaaaaang? 

[Kevin Wood]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

I still don't see how that would work in a manual.

Left foot on clutch, right on the noisy pedal. Find the bite point and pull the handle on the dash that disengages the "handbrake".

The two downsides (on the merc van I was using at the time) were that it was binary, so if you didn't have enough bite on to hold the van, you'd better get on it quick as you're rolling backwards  . And it made a lout "pang" noise when it disengaged.

Not as good as a proper handbrake on a manual car imo, but fine on an auto.

That's OK. We can do "binary".

[Viral_Jim]

That's OK. We can do "binary".

I've read there are only 10 types of people in the world...


 

[STEMO]

That's OK. We can do "binary".

I've read there are only 10 types of people in the world...


 

Or......there are only three types of people in the world. Those who can count and those that can't. 

[Andy B]

So all the design needs is a little light to tell you to keep driving around and avoid hills when the aux. battery level is low.


.. or a handle between the seats.

... or use your left foot 

I still don't see how that would work in a manual.

Left foot on clutch, right on the noisy pedal. Find the bite point and pull the handle on the dash that disengages the "handbrake".

The two downsides (on the merc van I was using at the time) were that it was binary, so if you didn't have enough bite on to hold the van, you'd better get on it quick as you're rolling backwards  . And it made a lout "pang" noise when it disengaged.

Not as good as a proper handbrake on a manual car imo, but fine on an auto.

 ... and they're no good for handbrake turns 

[TheBoy]

I live a lever. Makes 3 point turns far easier and quicker.

Needless to say electric handbrakes as satans work as well

[2boxerdogs]

I love liver 😀😁😂

[STEMO]

I live with my lover 

[Andy B]

I live with my lover 

I love liver 😀😁😂

[Auto Addict]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

[Andy B]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

[Doctor Gollum]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

This... 

[henryd]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

yes

[Andy B]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

yes

So Barry has mis-mis-diagnosed the fault   

[STEMO]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

yes

So Barry has mis-mis-diagnosed the fault   

Silly old duffer 

[Auto Addict]

Looks like it was caused by the aux. battery being low, seems fine now

But why was it low?

Aux. battery wasn't low, I misdiagnosed it.

Seems like the parking brake mechanism needs a good service.

Been parking on the flat and not using the parking brake - everything works fine.

But doesn't 'hold' use the normal foot brake system & not the hand/parking brake

yes

So Barry has mis-mis-diagnosed the fault   

Silly old duffer 

Less of the old

[Auto Addict]

The main starter battery has started to lose it's charge, the aux. battery reads 13.1v.

Not using the parking brake, which is sometimes difficult to release, seems to have 'cured' the 'HOLD'.

I suspect, that the parking brake was not fully releasing, affecting the 'HOLD' system.

That's my theory anyway.

A job for when the weather get's a bit warmer.

[Auto Addict]

Is this a no brainer :-

https://www.eurocarparts.com/car-battery

https://www.halfords.com/motoring/bulbs-blades-batteries/car-batteries/halfords-115agm-start-stop-agm-12v-car-battery-4-year-guarantee

[Doctor Gollum]

The main starter battery has started to lose it's charge, the aux. battery reads 13.1v.

Not using the parking brake, which is sometimes difficult to release, seems to have 'cured' the 'HOLD'.

I suspect, that the parking brake was not fully releasing, affecting the 'HOLD' system.

That's my theory anyway.

A job for when the weather get's a bit warmer.

The abs sensor might pick up that the wheel speed is off for the known conditions (ie hand brake released/brake pedal/gear/ throttle positions etc) but the parking brake is mechanically identical in operation to the Omega one... The only difference being the fact that it's foot operated rather than hand operated

Ignoring the parking brake servicing is an open invitation to more expensive repairs including the wheel bearings...