Technical Another ESP/Hill Holder Fault Thread!

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Technical Another ESP/Hill Holder Fault Thread!

Christian

Dey Turk Er Jerbs
Joined
Jul 27, 2006
Messages
247
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Location
Leeds
Ok - so first off, I have spent a solid week researching this issue with my 500, and including from this forum, there are no specific solutions and very, very few posts where people have solved the issue and posted results - that includes here and other forums around the world. People tend to post the fault then disappear so I hope that I can get some good advice from other people who have/have had this problem with a view to nipping the issue in the bud. I'd like to keep this thread limited to Fiat 500s.

My car is a 2008 1.4 Sport, just passed MOT with no advisories - 43,000 miles. Excellent condition, literally spotless inside and out with a clean engine bay. I have had new and used cars over many years and this looks and drives like it's just come out of the showroom.

I now have the intermittent issue where I get a warning beep, the ESP yellow fault lamp and the warnings 'ESP Unavailable' and then 'Hill holder unavailable'. The ASR lamp illuminates and the warnings can all be removed by turning the ignition off and restarting the car (until they decide to reappear for no reason later). I gather this is a very common niggle with many other Fiat 500s and other Fiats. The issue occurs for no clearly apparent reason - and has happened when I have done any of the following.

Driving away on my small uphill drive.
Braking when turning corners.
Driving down steep windy hills not applying any brake or clutch.
Driving on a straight level road in 6th gear at 50mph only touching the throttle.
Sitting in traffic with handbrake on not touching anything.

My frustration comes from there being no clear reason for it happening. This week I have driven in all conditions,wet dry, icy - for over 50 miles over 3 days with no fault appearing and I thought it had cleared up, but then it came on today for no apparent reason in dry easy conditions. There is never any following issue with the throttle dropping itself or any hazardous side effects and the car drives completely normally at all times - just with that yellow warning lamp until I restart the car.
The tyres are all excellent. The battery is new and is fully charged. The brake lights work as they should. My Maxiscan which I plugged in shows no recorded faults with the car, even when the ESP warnings are showing.
Although it has no affect on the car whatsoever, I really would like to get rid of these warnings permanently (they are like an itch) whatever it takes, so I will be starting a process of elimination starting with the cheapest possible fault and working my way up!

So as far as I can see, my options right now which could solve the problem are as follows.

Faulty brake switch under passenger dashboard.
Faulty ABS sensors.
ECU issue?? Connectors?
Battery fault (not likely)
Pads? - I cannot see anything else right now which I could work towards which could kill these warnings, but would appreciate any help, feedback or experience from other users. Hopefully I will sort this eventually and post findings at the end :)
 
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Ok - so first off, I have spent a solid week researching this issue with my 500, and including from this forum, there are no specific solutions and very, very few posts where people have solved the issue and posted results - that includes here and other forums around the world. People tend to post the fault then disappear so I hope that I can get some good advice from other people who have/have had this problem with a view to nipping the issue in the bud. I'd like to keep this thread limited to Fiat 500s.

My car is a 2008 1.4 Sport, just passed MOT with no advisories - 43,000 miles. Excellent condition, literally spotless inside and out with a clean engine bay. I have had new and used cars over many years and this looks and drives like it's just come out of the showroom.

I now have the intermittent issue where I get a warning beep, the ESP yellow fault lamp and the warnings 'ESP Unavailable' and then 'Hill holder unavailable'. The ASR lamp illuminates and the warnings can all be removed by turning the ignition off and restarting the car (until they decide to reappear for no reason later). I gather this is a very common niggle with many other Fiat 500s and other Fiats. The issue occurs for no clearly apparent reason - and has happened when I have done any of the following.

Driving away on my small uphill drive.
Braking when turning corners.
Driving down steep windy hills not applying any brake or clutch.
Driving on a straight level road in 6th gear at 50mph only touching the throttle.
Sitting in traffic with handbrake on not touching anything.

My frustration comes from there being no clear reason for it happening. This week I have driven in all conditions,wet dry, icy - for over 50 miles over 3 days and thought it had cleared up, but then it came on today for no apparent reason in dry easy conditions. There is never any following issue with the throttle dropping itself or any hazardous side effects and the car drives completely normally at all times - just with that yellow warning lamp until I restart the car.
The tyres are all excellent. The battery is new and is fully charged. The brake lights work as they should. My Maxiscan which I plugged in shows no recorded faults with the car, even when the ESP warnings are showing.
Although it has no affect on the car whatsoever, I really would like to get rid of these warnings permanently (they are like an itch) whatever it takes, so I will be starting a process of elimination starting with the cheapest possible fault and working my way up!

So as far as I can see, my options right now which could solve the problem are as follows.

Faulty brake switch under passenger dashboard.
Faulty ABS sensors.
ECU issue?? Connectors?
Battery fault (not likely)
Pads? - I cannot see anything else right now which I could work towards which could kill these warnings, but would appreciate any help, feedback or experience from other. Hopefully I will sort this eventually and post findings at the end :)

Only time I have ever had a hill holder fault on my 1.4 Sport was when the battery was low. If its low I sometimes get power steering faults too when starting the car, must be the current surge from turning the engine over.
 
Yes, the battery on mine I hooked up to my charger and it showed as fully charged and healthy. Its apparently six months old (no receipt though) and I've priced a new one up at around £50 (Bosch) - I'm tempted to just change it so it's done, and if it still does it I'll know it wasn't the battery. First I'll be changing the brake switch which will cost around £10. Although the warnings can occur when not braking, I've got this idea in my head that the switch could possibly be faulty and making contact as I'm driving but not braking, confusing the ESP system. Thanks for replying!
 
I had this exact fault on my Grande Punto Abarth. It came after several costly repairs and due to inability to pin point the cause or the problem, I've decided to get rid of the car. I have extensively researched the issue but was unable to find the cause. I'd be really interested in the solution. Please keep us posted. Good luck!
 
I had this exact fault on my Grande Punto Abarth. It came after several costly repairs and due to inability to pin point the cause or the problem, I've decided to get rid of the car. I have extensively researched the issue but was unable to find the cause. I'd be really interested in the solution. Please keep us posted. Good luck!

Mel, did you change the battery, and get the earth cables checked..??:confused:

the main earth cable is a common problem - it breaks down internally, :eek:

worth doing this 1st, then the battery:)

Charlie
 
Meep.

Ok, thanks - so I've been out today to the opposite side of Leeds (about 20 minutes) and the fault came up as soon as I left my house, and continued despite three resets. The car had not been used since last night.

When I got to my destination I left the car for 10 mins and drove back home - no faults whatsoever for the return journey, or for the rest of the afternoon. I'm not an auto electrician by any definition, but this is making me think it is in fact a battery issue.

I have researched through the 500 section and there are mildly differing opinions on what battery to put on this but I really don't want to spend a ridiculous amount of money on a new battery, probably under £70 would do me - I was wondering what you guys thought of one of these?

http://www.ebay.co.uk/itm/Duracell-...e:Fiat&hash=item35f39c4d22:g:-7MAAOSwwbdWHidO

Would a higher capacity battery be better like some users have? Would a 2008 Sport be able to keep one topped?

At least if I get this job done, and it doesn't cure the issue, I'll be able to remove it from the list and move onto a couple of other possible causes...
 
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Meep.

Ok, thanks - so I've been out today to the opposite side of Leeds (about 20 minutes) and the fault came up as soon as I left my house, and continued despite three resets. The car had not been used since last night.

When I got to my destination I left the car for 10 mins and drove back home - no faults whatsoever for the return journey, or for the rest of the afternoon. I'm not an auto electrician by any definition, but this is making me think it is in fact a battery issue.

I have researched through the 500 section and there are mildly differing opinions on what battery to put on this but I really don't want to spend a ridiculous amount of money on a new battery, probably under £70 would do me - I was wondering what you guys thought of one of these?

http://www.ebay.co.uk/itm/Duracell-...e:Fiat&hash=item35f39c4d22:g:-7MAAOSwwbdWHidO

Would a higher capacity battery be better like some users have? Would a 2008 Sport be able to keep one topped?

At least if I get this job done, and it doesn't cure the issue, I'll be able to remove it from the list and move onto a couple of other possible causes...

Check out carparts4less (eurocarparts online only) they have 10% off using "DISCOUNT10" at the moment! You might be able to grab a battery at a reasonable price a Bosch 063 battery is £37 delivered for example
 
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Get multiecuscan which will read all modules and specific codes and go from there. Maxiscans look cheap and generic so probably isn't doing a proper job.

OK - so I bought a new brake switch to take the factor out of the equation! Will be here next week and so far is the cheapest possible cause of the issue I want to cross off.

I also now have MultiECUScan on my laptop, but the results from searching on this site and the web as to what cable I need to use are confusing to say the least - I have NO experience at using ECU scanners other than the basic Maxiscan which I've never actually corrected anything with.

Sooo, what sort of reasonably priced lead would be suitable for connecting to the car with a view to looking for ABS/Braking type fault codes using MultiECUScan? Again, I have no experience with this sort of thing but if it works out cheaper than getting a garage to diagnose (without me witnessing them do it, obviously) then I would rather have a go and see the results for myself. When I say 'reasonably priced' - I'm not cheap, just not made of money lulz There are several bluetooth, USB versions all of which look the same and yet so different.

My 500 is in for a major service tomorrow from my local non-specialist mechanic so I am holding off on the new battery until payday as the service is going to clear me out good and proper for the month.

any advice appreciated....... :)
 
I bought this set for a reasonable price and seemed to work well on my 500.

http://www.ebay.co.uk/itm/151970893737

Yep - and it's all you need for just about any other FIAT/Alfa Romeo application as well.

Once the ASR fault is present, connecting to the ABS ECU with the green adapter cable will show the relevant fault codes.

-Alex
 
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Is the reverse light working? If not could be a switch/connection/wiring issue on the gearbox if bulb is ok. Had it before where the contact has corroded on grande punto sportings and confuses the abs system causing it to disable hill holder
 
Cars in a service centre but will check as soon as it returns - did this fault happen just when reversing or randomly while driving?
 
Reverse light working fine anyway - the brand new stop light switch is also now in - surprising easy job, it took less than 30 seconds. Now I need a few journeys to see if it has made a difference. Knowing my luck, no.
 
Reverse light working fine anyway - the brand new stop light switch is also now in - surprising easy job, it took less than 30 seconds. Now I need a few journeys to see if it has made a difference. Knowing my luck, no.

Let's hope it's a simple fix. Nothing worse than errors coming up on the dash.
 
Okaaaaaaaay!

So I used the car properly today for the first time since I installed the brand new switch on Saturday and went on a 10 mile local shopping trip, lots of stop starting, parking up etc (including the dreaded escape from my uphill drive!) - no faults so far, but I'm not holding my breath as knowing my luck this will be too a good a fix to be true but we'll see - I'll give it a couple of weeks then update.

As for the old switch, I pulled it apart by hand - quite easily once I realised how to do it. You just fold it and give it a firm SNAP movement with both hands and it disassembles undamaged. I have tested the old switch with my multimeter and as far as I can see, the two sets of contacts in the switch are set up as one set is permanently open until the brake pedal is pressed, the other set is permanently closed until the brake pedal is pressed. Hmmm? Don't know if this is correct or not, and also, IMO the actual contents of the switch look a bit poorly machined. For anyone actually interested in seeing what the inside of one of these switches looks like, I took some pics.




One thing I have noticed without even trying is this contact plate has pretty bad electrical wear on one pin and absolutely nothing on the other. This has lead me to think that the switch positively needed replacing even if the fault ends up having another cause.

I will update this post either when the fault reappears or in a couple of weeks if it hasn't appeared - I'm not holding my breath but we'll see!
 
I have tested the old switch with my multimeter and as far as I can see, the two sets of contacts in the switch are set up as one set is permanently open until the brake pedal is pressed, the other set is permanently closed until the brake pedal is pressed. Hmmm? Don't know if this is correct or not,

Sounds sensible for fault detection purposes.
 
May as we'll do this now instead of waiting another week as I did an unexpected journey to Liverpool today - combined with the running around I've done since changing the brake switch it amounts to over 350 miles driving about and the fault has not reappeared at all.

Luckily for me the cheapest of the potential causes was the actual cause - the brake switch when dismantled clearly shows signs of electrical contact damage/wear and this was unquestionably causing the fault. Still stunned that a pinhead sized faulty component could knock so many systems out on such a modern, and small motor.

Happy ending folks. I like getting happy endings. Hopefully this thread will be of some use to peeps putting up with the same issue
 
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