17-19 G90 highway shaking SOLVED! FINALLY!

[aaron.andelin]

Guys, I have been chasing this problem for years. The other day i got curious about some live data from the yaw sensor. It wasnt stable. It bounced around for no reason. i decided to bring chatgpt into the equation. Here is a summary. and yes. my problem is fixed. Hold your esc button for 5 seconds to disable ESC and traction control. if it smooths out, its your problem too. Good luck!

If your 2017–2019 G90 AWD shakes at highway speed and no one can find the cause, check this before replacing more wheels/tires/rotors.


TL;DR: Mine was caused by a bad yaw/lateral/longitudinal G-sensor module (95910-D2000) under the front console.
It was feeding false data to ESC/HTRAC, which pulsed the brakes and shuffled torque constantly — felt like a rhythmic vibration.

---

1. Drive on smooth road at 55–65 mph.
2. Hold ESC button for ~5 seconds until “ESC OFF” light comes on (full stability control OFF).
3. If the shake instantly disappears, it’s NOT mechanical — it’s electronic brake vectoring reacting to bad yaw data.

---

• Module: ABS/ESC → Live Data → Yaw Rate
• Parked on level ground, wheel straight:
  • Good: ~0.00 °/s (±0.02)
  • Bad: drifting/jumping −0.25 to −0.8 °/s while stationary or going straight
• Lateral/Longitudinal G should be steady near zero.

---

• Sensor is bolted to the floor under the center console, between the front seats.
• One mounting point is a major ground lug (multiple wires) — corrosion/looseness here can cause bad readings.
• In my case, pressing on the connector made yaw stabilize — likely a cracked solder joint or terminal tension issue.

---

• Replace module 95910-D2000 (used OK if good), clean ground contact, torque bolts by hand (6.9–8.8 N·m / 5.1–6.5 lb-ft).
• Run G-Sensor Calibration in ESC after install.
• Shake gone, ESC ON works normally.

---

The bad yaw signal stayed “plausible,” so ESC thought the car was in a constant gentle turn — no DTC, just constant corrections.

 

[aaron.andelin]

Guys, I have been chasing this problem for years. The other day i got curious about some live data from the yaw sensor. It wasnt stable. It bounced around for no reason. i decided to bring chatgpt into the equation. Here is a summary. and yes. my problem is fixed. Hold your esc button for 5 seconds to disable ESC and traction control. if it smooths out, its your problem too. Good luck!

If your 2017–2019 G90 AWD shakes at highway speed and no one can find the cause, check this before replacing more wheels/tires/rotors.


TL;DR: Mine was caused by a bad yaw/lateral/longitudinal G-sensor module (95910-D2000) under the front console.
It was feeding false data to ESC/HTRAC, which pulsed the brakes and shuffled torque constantly — felt like a rhythmic vibration.

---

1. Drive on smooth road at 55–65 mph.
2. Hold ESC button for ~5 seconds until “ESC OFF” light comes on (full stability control OFF).
3. If the shake instantly disappears, it’s NOT mechanical — it’s electronic brake vectoring reacting to bad yaw data.

---

• Module: ABS/ESC → Live Data → Yaw Rate
• Parked on level ground, wheel straight:
  • Good: ~0.00 °/s (±0.02)
  • Bad: drifting/jumping −0.25 to −0.8 °/s while stationary or going straight
• Lateral/Longitudinal G should be steady near zero.

---

• Sensor is bolted to the floor under the center console, between the front seats.
• One mounting point is a major ground lug (multiple wires) — corrosion/looseness here can cause bad readings.
• In my case, pressing on the connector made yaw stabilize — likely a cracked solder joint or terminal tension issue.

---

• Replace module 95910-D2000 (used OK if good), clean ground contact, torque bolts by hand (6.9–8.8 N·m / 5.1–6.5 lb-ft).
• Run G-Sensor Calibration in ESC after install.
• Shake gone, ESC ON works normally.

---

The bad yaw signal stayed “plausible,” so ESC thought the car was in a constant gentle turn — no DTC, just constant corrections.

I realize it says air bag control unit, but trust me, it does your yaw/lateral/longitudinal G-sensor. Just touching the connector caused the yaw readings to stabilize. There is a youtube video of how to get under the console. its 5 10mm bolts and 2 trim pieces. 50$ used. Install time - hour. Troubleshooting time - 5 years, countless rotors, tires, suspension parts, brake calipers, mounts, sensors, axles. Money saved on not giving up and getting another car - ~$50k. You're welcome, Genesis. I'd appreciate a brand new G90 for free now, or at least a check for the cost of all my parts and repairs and time WASTED. $50K should cover it.

 

[aaron.andelin]

So, apparently a tsb came out this last January extending the warranty on that abs module to 15 years, unlimited mileage. https://static.nhtsa.gov/odi/tsbs/2025/MC-11012821-0001.pdf

 

[rick3242]

Well Done!

 

[LBTX]

I get the shakes on my 2021 G90 at the same speed. Do your steps 2-3 work on 21 G90 for diagnosis? How do you get the data below:

• Module: ABS/ESC → Live Data → Yaw Rate
• Parked on level ground, wheel straight:
  • Good: ~0.00 °/s (±0.02)
  • Bad: drifting/jumping −0.25 to −0.8 °/s while stationary or going straight
• Lateral/Longitudinal G should be steady near zero.

 

[aaron.andelin]

I get the shakes on my 2021 G90 at the same speed. Do your steps 2-3 work on 21 G90 for diagnosis? How do you get the data below:

• Module: ABS/ESC → Live Data → Yaw Rate
• Parked on level ground, wheel straight:
  • Good: ~0.00 °/s (±0.02)
  • Bad: drifting/jumping −0.25 to −0.8 °/s while stationary or going straight
• Lateral/Longitudinal G should be steady near zero.

The fastest way to find out for sure is turning off traction AND stability control by holding the traction control button for over 5 seconds. Your dashboard will show both

 

[turnne]

I have noticed that new tires can change this issue dramatically. I actually noticed the same thing on the Equus when I owned it as well

Warren

 

[LBTX]

The fastest way to find out for sure is turning off traction AND stability control by holding the traction control button for over 5 seconds. Your dashboard will show both

I turned off traction and stability, while parked. The dash indicated the they were turned off, but the Yaw rate, lat /long datadid not display. Has anyone with a 2020+ years been able to get the data on their screen to show the data? Now that I know about this I will try what is suggested while driving and see if the shakes stop.

 

[srobak]

I realize it says air bag control unit, but trust me, it does your yaw/lateral/longitudinal G-sensor.

This makes sense. Accelerometers are used in air bag controllers to record inputs/abrupt changes in vehicle acceleration, deceleration or change in direction which then fire the airbag triggers. There are no "impact sensors" in the bumpers of vehicles as is often misrepresented in TV and movies. Never has been.