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Discussion Starter · #1 ·
Hi Folks,
Apart from the replacement audio and Pre-cat Lambda Sensor plus several EML resets later the Beetle has happily sailed through an MOT and covered 2.5k happy miles! However on the way home from work made a left turn into my road and whilst braking the ESP triangle warning light came on? Switched off and on but the light stayed on, put her away for and hour then on starting the light went out with all the others as usual hmm, So 2 miles down the road all was well until I braked fairly hard for a right turn and the left rear locked up and the ESP light came on, wheel/brake released, then 5 metres further locked again then released!!!!Pulled over switched off and on, but ESP light would not go out so gently drove home with the ESP on! No more dramas but what is occurring?
The Discs, Calipers and Pads are all in very good condition and are all VAG O.E and not that old, however I never did get to the bottom of the occasional judder.....Hmmm!
I think this could be another sensor ABS or similar problem.... what do you guys know????
 

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We can speculate ad nauseum, as to what the problem is; you need to scan the car for trouble codes with a scan tool and you may need a VW compatible scan tool. Check on ebay or amazon; for a cheap tool like a VAG 401, Foxwell NT500 (there are many other VW scanners out there) or go all the way with VCDS by Ross Tech. For some of the VW proprietary parts related specific issues; like ABS modules, you need specific VW compatibility, to read the codes. Once, you get the codes; you can see what they are and that can point you in the direction, of the problem. Get the car scanned; post the codes and we can go from there. Thanks.
 

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Discussion Starter · #3 ·
Thanks Billy,
Luckily I have a friend with a very expensive Laptop which correctly reads the VAG codes and completes resets etc. Will creep over to his workshop tomorrow. A little research and I found what is almost certainly the cause: ESP ABS Pump solenoid, so I'm expecting a 01435 code unless I'm very lucky!
This however explains the brake judder!!! As I found recently a little pump of the pedal prior to braking from speed and no judder:( Very expensive to buy a new pump , however there are a couple of firms that rebuild these (sinspeed and ECU testing)
I'll post up my codes tomorrow..... I hate modern cars, Far too many unreliable electronic gizmos!
Finally I did spot a recall thread somewhere which included 2001 Beetles.....any mileage in pursuing this???
 

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Well, wait until you get some codes and do some troubleshooting to find the problem; don't drive yourself crazy speculating! :)

As for recalls; call your local VW dealer with your VIN # and see if there are any open recalls. If there are; they can schedule a service appointment for you and the repairs will be free.

Keep in mind; as these cars get older, you will have to do maintenance and repairs. One of the best investments you can do; is to get a VW scan tool, it can help you read trouble codes and this info, can help you find problems with your car. These trouble codes; can help us, help you! The cost of a vw scan tool; is cheaper, than having a pro shop do it for you. At that point; you can decide to fix things yourself or take it to a pro. Many repairs; can be done yourself and save a allot of money. Even if you decide to have a pro do the repairs; having information about what it wrong, will help you be a educated owner. Yes, these cars are more sophisticated; than older cars but they can be repaired, knowledge is power. The primary way; to start many repairs, is to read trouble codes and you need a vw scan tool for that.
 

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Discussion Starter · #5 ·
01542 Yaw rate sensor and it shows as permanent circuit failure: mad:
Location please? Tried googling this ...... apparently another common fault! But everything I've seen (Image wise) relates to Golf, Bora and A4's the Ross Tech wiki seems helpful but best I locate the blasted thing first:eek:
 

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http://wiki.ross-tech.com/wiki/index.php/01542

Looks like you could first try; Perform Yaw Rate Sensor (G202) Basic Setting and see if that fixes it. Otherwise, testing of the wiring and sensor; looks to be the next step, after that.

What year, model, engine and transmission does your New Beetle have?
 

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Discussion Starter · #7 ·
Hi Billy,
Spoke an ex-VW Tech who seemed to remember that the location of these changed several times in early new Beetles? The nearest I've found images of is a 2003 model but this could well be the wrong location!
Mine is a 2001 2.0L manual right hand drive, 9C13L AQY engine.
The guy also mentioned that some have been know to get loose from the wiring connector and/or the wiring gets frayed approx
3ins from the connector plug???? that would be handy/lucky.....especially when I find it:confused:
 

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Discussion Starter · #8 ·
Any clues??? Had most of the obvious panels off as I didn't fancy removing the steering wheel, searching where Mr VW tech thought it may be! and you've guessed can't locate the Yaw sensor:mad:
So without removing any insulation or sheaving I checked all the wiring and connectors especially those coming from the ESP switch, but everything seems perfect?
Warning light goes out once the car is switched off and rested(20 mins?) But after 10-15 mins drive the brakes apply themselves fairly sharply then release with said warning triangle light now on (Yellow)however I had to drive some 35 miles like this without issue:rolleyes:
Need to sort this though as it does belong to Lady Toad and she won't drive the bug until its fixed!!!!
 

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Well first of all; I would try to reset this sensor ( the settings may have gotten lost and restoring them, may fix the problem), this would require the VCDS by Ross Tech or other VW compatible scanner like a VAG 401 or Foxwell iNT 500. The sensor is integrated into the steering wheel clock spring; CORRECTION: Steering angle sensor -G85-: so, if that ends up needing replacement, removal of the steering wheel and airbag would be required. If this is beyond your capabilities; seek professional help from a VW specialist or local authorized VW dealer/service centre.

If you gain access to a compatible scan tool and need help with reset process, let us know, we can walk through the rest process. Also, if you need help replacing the clock spring; we can discuss how to do that as well. Let us know; how you want to proceed. Thanks.

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eps light

Hi lady toad and billy made.

Me new to this site, have been reading your posts as I have the same problem, eps light coming on. Having spent many hours reading up on it on the web the faults seem endless, I have just ordered my self a cheap code reader from ebay.

During investigation I found that if I start the car with the handbrake off the eps light will not come on, any idea?
 

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Each situation of the light coming on; needs to be diagnosed and the car scanned for trouble codes. In this situation; a VW specific compatible scan tool, gave us unique VW factory codes that were helpful in narrowing down the problem. I recommend you do the same; you might start your own thread; once you get some trouble codes. Thanks.


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Discussion Starter · #12 ·
Hi Billy,
Thanks for the info!I was avoiding the steering wheel removal as not a task I've performed that often! I probably have the right tools and knowhow:) was easy before airbags.... showing my age here, but I'm waiting for a workshop CD to arrive as the Haynes Manual is not as helpful as I remember these being(Polite comment:mad:)Obviously the reset is the first task and my pal with the Laptop was unaware this was specifically possible:D So booked in for Wednesday morning...... fingers crossed!
 

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Well, let us know how it goes; worst case scenario, you might need a new clock spring.CORRECTION: Steering angle sensor -G85-: is integrated into the clock spring


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Discussion Starter · #14 ·
Hopefully not Billy, I'm not that good with clocks:D Certainly a new one for me: Yaw sensors, Clock springs.... I feel so old:(
Meanwhile I forgot to mention the ESP switch now works as it should.... was a job on my to-do list brought forward by this little issue.....So no problem with me driving the bug around after switching the ESP off I assume? Interestingly I think the intermittent brake judder has gone.... with the ESP off, not sure yet!
Also I now think the sudden nano-second of braking as the light came could have been EDL assuming the bug has this??? Will the codes in vehicle data VIN sheet tell me this under options?
 

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I believe the EDL (electronic differential lock); only came on the 1.8T equipped cars and I am pretty sure, it was integrated into the ASR (anti slip regulation system) that was included, in those higher performance options. I can only assume; the lower performing 2.0L and 1.9L TDI were not seen, as spinning the tires as much (lower power) and therefore the ASR/EDL were not installed. This is what I have observed from a USA spec perspective; I don't know if euro/uk spec New Beetles were any different but I believe they were the same.
 

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Discussion Starter · #16 ·
Hi Billy,
I would agree about the EDL, the only thing is this car was very over-speced as a parallel import and show car therefore it has everything that was available as an extra on a 2001 model?
Googled the clock spring.... now I know what you are referring to :) So today's session with the Laptop points the finger at the Yaw Rate Sensor as failed and cannot accept any basic setting or reset instructions/ prompts! Got on to the main VAG parts supplier with the Index and Vin numbers and the Yaw Rate sensor is actually located in the front Left wheel arch area behind/near to the front strut! O.E VAG part is a whopping £481.15 for something the size of a matchbox.....Hellfire:mad: Hopefully when I find it and the exact part number, with a search and maybe locate a second-hand part this will reduce the cost considerably:(
 

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Hmmm, that is interesting, I thought it was integrated into the clock spring? CORRECTION: Steering angle sensor -G85-: Anyway, a used part would be the way to go; new genuine VW parts can be very expensive, no wonder so many broken old VW's end up on the junk yard! :(


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Discussion Starter · #18 ·
Well..... the proof will be when I get to look properly! I thought I had the steering wheel location covered, until I viewed an actual clock spring unit which is not totally visible without removal of the Steering wheel so..... update pending:confused:
 

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Doing some searching online; it looks like, some companies offer repair services for the yaw sensor @ $200, sounds like it is a known to have failure problems. Of course; you would want to make sure, it is bad and not just a wiring problem.

https://www.google.com/search?q=Rep...rome..69i57.4675j0j4&sourceid=chrome&ie=UTF-8

As for locations; I guess I was thinking, of the Steering angle sensor -G85- that is integrated into the clock spring/steering wheel

: Note: locations may be the opposite on a UK spec RHD vehicle?):

Volkswagen Workshop Manuals > New Beetle L4-2.0L (AZG) (2003) > Sensors and Switches > Sensors and Switches - Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Service and Repair

Here is the section for the "yaw" sensor: Sender for rotation rate -G202- and sensor for transverse acceleration -G200-, (2003 model shown: USA spec)

Volkswagen Workshop Manuals > New Beetle L4-2.0L (AZG) (2003) > Sensors and Switches > Sensors and Switches - Brakes and Traction Control > Yaw Rate Sensor > Component Information > Service and Repair > Sender, Rotation Rate, and Sensor, Transverse A

As for some of the other things we were talking about; here are some definitions:

http://en.volkswagen.com/en/innovat...lossary/elektronische_differenzialsperre.html

http://en.volkswagen.com/en/innovation-and-technology/technical-glossary/asr.html

http://en.volkswagen.com/en/innovat...y/elektronisches_stabilisierungsprogramm.html

From what I am seeing online; USA spec 2001 New Beetle:

2.0L safety features:

4-wheel ABS
Electronic brakeforce distribution


1.8L Turbo safety features:

4-wheel ABS
Traction control (added to Turbo models)
Electronic brakeforce distribution

For the 2002 Turbo S 1.8T model:

Safety Features

4-wheel ABS
Stability control
Traction control
Electronic brakeforce distribution

By the 2006 model with the 2.5L 5 cylinder engine: these features came standard that the Turbo models had earlier:

Safety Features
4-wheel ABS
Stability control
Traction control
Electronic brakeforce distribution


It would be interesting to know; if the UK spec cars, were upgraded in the 2.0L while the USA spec were not? I think on later models; traction control became a standard feature?
 

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Discussion Starter · #20 ·
Hi Billy,
Hope to get a proper look at the sensor this week? I found a reconditioning company in Germany through eBay, looks like they do the same for the States? Think this would be better than chancing a S/H unit?
On the car spec: This is a parallel import which means it was made for the U.K market, but did not come in with the usual deliveries on mass to VW dealerships, consequence is it has all the extra kit that was available if specially ordered. These cars are usually demos for any given period of time?
It definitely has an ESP program of sorts including ABS and TCS.
 
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