How to Fix Faulty Logitech G29 Pedals

Written By: Jeremy Sukhai

Comments: 17

Difficulty

Moderate

Steps

Time Required

20 - 45 minutes

Introduction

If your Logitech G29 pedals are inputting inaccurate readings, this is mostly due to the potentiometer and its connections. Since the pedals live on the ground, dust and hair/fur can accumulate in the potentiometer, which will create unintended input from the pedal. Improper connections of the wires to the terminals are also common issues, as well as the ground loop. Use this guide to diagnose and fix the connections and/or potentiometer of the pedal in question.

The potentiometer is responsible for getting a reading of the extent that the pedal is being pressed, while the potentiometer connections and cable is responsible for relaying this info to the computer/application. Therefore either or both of these components can result in inaccurate readings from the pedal.

Before beginning, make the sure pedals are unplugged from the wheel.

Tools

Step 1

Remove the four 30 mm screws from the left and middle pedals using a 1/8 hex key.
Remove the two 16.3 mm screws from the right pedal using a 1/8 hex key.
Pull the silver pedal plates off of each pedal.

Step 2

Flip the pedal set over so it is facing down.
Remove twelve 15.8 mm screws from the bottom using a Phillips #1 screwdriver,
Remove two 15.8 mm screws hidden behind the rug grip using a Phillips #1 screwdriver.
These metal screws are screwed into plastic, so do not overtighten them when reassembling, or you might strip the anchor points.

Step 3

Slowly and carefully lift the top housing up from the set.
Do not pull the top housing too far, as a cable is anchored to the top housing, which needs to be unscrewed in the next step.

Step 4

Using a Phillips #1 screwdriver, remove two 7.4 mm screws that hold the cable to the top housing.

Step 5

Flip the pedal set onto its side.
Each pedal is held in place with four screws.
Using a Phillips #1 screwdriver, remove the four 15.8 mm screws corresponding to the pedal you want to fix.
In this guide, I will be working on the gas pedal only. The process is the same for each pedal.
Once the four screws are removed, you can remove the pedal from the base to get a clearer view and access to the potentiometer and its connections.

Step 6

The color of the wires are different for each pedal. Keep note of the color of the wires, and which goes where.
Using a Phillips #1 screwdriver, remove the single 6.2 mm screw holding the ground ring in place.
Using a pair of pliers, remove the three connections carefully.
When pulling on the three connection points, there may be some resistance. Do not pull too hard; if you yank on the cable too hard while it's out, it might damage the cable itself.

Can I use the potentiometer from the clutch or the brake and swap it with the one on throttle

Greg Cook -

Step 7

Check the terminals for any debris or particles that might be in the way. Ensure the terminals are clean so that the connection is not interrupted.
Check the ground ring and where it connects to make sure no debris or particles are in the way. The ground ring needs to be directly touching the metal on the pedal for it to work properly.
If the connections are dirty, wipe them using isopropyl alcohol.

Step 8

Reinsert the wires into the terminals.
Make sure the wire fits all the way in, as shown in the second picture.
If the connection still feels somewhat loose or shaky, squeeze the connection a little bit to make it more tight, ensuring it wont undo itself over time.

Step 9

Reinsert the ground pin and screw it in.

Step 10

Spray compressed air into the potentiometer to remove any dust/debris/hair/fur that may be inside the potentiometer.

Brilliant guide we was going to throw our pedals but this worked brill we used contact spray on potentiometer. Now it's as good as new. Thanks

Mark Waring -

Conclusion

To reassemble your device, follow steps 1-5 in reverse order.

Author

Jeremy Sukhai

Member since: 18/01/22

381 Reputation

15 comments

Jeremy thank you so much for the information very helpful. I have a question what if I was wanting to have my throttle to run wide open when I get off the throttle and decelerate when I push down on the throttle kinda like a dozer there for not wanting to have to push on the throttle all the time

Bill Davis -

This could be achieved through software rather then altering the pedals itself. Most games or software will provide you with options to customize the functionality of pedals, that way you can invert the input so 0input=full throttle and 100input=no throttle. If you cant do this through software, you could swap the 5v and ground connections which are the connections not in the middle. This will reverse the voltage reading for the potentiometer, then the throttle will be wide open by default, and decelerate when you press the pedal.

Jeremy Sukhai -

Thank you Jeremy so much I will try to do this.

Bill Davis -

Im having a problem where the throttle accelerates wide open when i let off the pedal but when i push on the pedal it decelerates, how can i fix this?

Octavio Reyes -

Im having a problem where my brake doesn't work and when I accelerate it also activates the brake. How can I fix this

James Stanford -

did you solve the problem?

infantry -

same happens to me, if you solved it, how did you do it?

Martí Ton cosí -

Thanks so much Jeremy. Although I have another problem. My bunny cutted the wire of the pedals that connects to the PC. The worst is that I moved to another house and I lost the cutted cable. What can I do in this case?

Gp ultra -

My pedals don't want to go to 100%, and when I push hard, the green scale on the dash or the gas gauge keeps jumping back and forth, like from 100 to 80, 90, 80, 100 percent, I don't know. is left over. stable, I go to logitech support, and they don't have spare parts, and what I think is, the small rotor connection between the pedal and the cable that goes to the steering wheel is defective, or is it that the pedals are no longer useful,, Do you have any solution? , thank you

Jose Peer -

I've had similar issues before and it seems to be the issue of the cable that connects from the pedals to the base of the wheel. I found that applying tension on the pedal cable can fix this issue, although it definitely isn't a permanent fix. Try cleaning the connector for the pedal cable and also the port it plugs into on the base of the wheel and try pulling on the pedal cable(pull the part of the cable that comes out the back of the wheel) to apply tension and see if that solves the problem. If it does solve the problem, you will have to figure out a way to maintain that tension on the cable or it will stop working correctly again. If I still had my g29 I would have a better solution for you but I do not have my g29 anymore. After experiencing so many issues with the g29 I simply upgraded to the Moza R5.

Jeremy -

i think with software you can try to put the maximum throttle when is not in the top, i dont know if you can do it in the logitech g hub or maybe inside the game, assetto corsa, for example, you can change that

Martí Ton cosí -

I bought the tools today , since I already had some air spray which was my last check , I added a connector spray, they didn't have to Allen key as a single one, I bought the whole key chain, now on my way to hit and brake my TP ,

I'll let me know how it'd goes, ok

Jose Peer -

Jeremy that's the way I had it but too much spinning out on corners, but the brake pedal has the same ill, so imma do what Mr Page has to offer

Jose Peer -

hi Jeremy,weist du wo ich Original Logitech G29 Potentiometers kaufen kann???

FattyMorgana -

I’m having an issue where if there is nothing pressing the gas pedal it registers as roughly 20% pushed. I’m trying to use this and I’ll get back to you if it works.

Ranveer -