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Anyone Know How To Reset The Ecu On A Vw Golf?

SS8_Gohan

By SS8_Gohan,
in General Automotive Discussion

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SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

Hi,

my bro's car is using fuel like you wouldn't believe and has probably been doing so for a while, he wouldn't have noticed. I've been driving it a bit because my car is getting resprayed and was looking forward to the less fuel consumption compared to the Skyline. Blow me down, i get a 14.2l/100km's out of a 2ltr, 4 cylinder golf!

I'm thinking it's running stupidly rich as at night you can see smoke behind the car, can't really see it during the day. And smells quite petrolly too.

He's had issues before with fuel (wasn't putting in the right fuel, unleaded instead of premium, screwed things) so i'm guessing the CAT is well and truly dead. But i was just wanting to do a ECU reset, hopefully get things back to normal. Anyone know how to do this on a 2001 VW Golf?

couldn't believe the fuel consumption....

342Four Grand Master

342Four

Posted
Posted

i do the same thing on my excel every now and then

what i do is warm the car up to normal temp, then remove the red battery terminal

i let it sit for a about 5 minutes, then depress teh brake pedal for ~20 sec to discharge all teh capacitors, then immediatly connect the battery back up again

now i dont no how well this would work in a more modern car with a more sophisticated ecu, so i wouldnt really recommend it unless ur confident to do it, as it has the potential to screw something up

hope it helps

CEF11E Veteran

CEF11E

Posted
Posted

My uncle's VW passat in Poland had a simular issue last year. We just left the car off and disconnected the battery with the brake pedal pressed for 5 min and then reconnected the battery and voila!.

also cleaned out the AFM and replaced the 02 sensor.

hope this helps! also if you have a security coded radio make sure you have the code before you disconnect the battery.

Cheers!

Jolinator Proficient

Jolinator

Posted
Posted

you wont be able to Reset a vw ecu as such,

if it has as many issues as you describe, take it into any audi or vw dealership and get them to check the fault codes, they shouldnt charge you

then you will know the issue

SS8_Gohan Grand Master

SS8_Gohan

Posted
  • Author
Posted

cool, that's a good idea. Get the codes checked first.

I was shifting between 2000-2500 rpm. I know my brother drives the car hard (the suspension takes an absolute hammering) but i was being granny. And still, 14.2l/100km's. Pathetic.

mad082 Grand Master

mad082

Posted
Posted

how far are you driving each? if you are only driving short distances then that will be part of the problem. the car is still in cold start so it is running richer.

also if you are doing city driving where you stopping and starting a lot then that has an effect too. remember that the car is still using fuel while it is sitting there idling.

SS8_Gohan Grand Master

SS8_Gohan

Posted
  • Author
Posted

show me a properly working 2001 Golf that uses that much petrol when city driving

reading taken from 20litres of petrol. I travalled 140km's. Mainly beach rd driving, during non-peak hour (i work shifts) So sitting on 60km/hr for the majority, not stop start. It's a good run on beach rd. Trust me, it's something very wrong, but will get checked as soon as possible. Prob do the codes before i run around resetting ECU's.

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