diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
index e6fcd8ae2f6..5d4f465d22e 100644
--- a/.github/CHANGELOG.md
+++ b/.github/CHANGELOG.md
@@ -107,6 +107,7 @@
 1. [A380X/ENGINES] Adjust climb thrust to be more accurate - @BlueberryKing (BlueberryKing)
 1. [A380X/EWD] Show THR limit in EWD instead of N1 - @flogross89 (floridude)
 1. [A380X/FLIGHT MODEL] Fix pitchup and unrecoverable stall - - @donstim (donbikes#4084)
+1. [PFD] Add LS button reminder - @BravoMike99 (bruno_pt99)
 
 ## 0.12.0
 
diff --git a/fbw-a32nx/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx b/fbw-a32nx/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
index 8de2a9b9640..9cead80f4db 100644
--- a/fbw-a32nx/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
+++ b/fbw-a32nx/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
@@ -15,13 +15,16 @@ import {
   Subscription,
   VNode,
 } from '@microsoft/msfs-sdk';
-import { ArincEventBus, Arinc429RegisterSubject, MathUtils } from '@flybywiresim/fbw-sdk';
+import { ArincEventBus, Arinc429RegisterSubject, MathUtils, Arinc429ConsumerSubject } from '@flybywiresim/fbw-sdk';
 
 import { getDisplayIndex } from 'instruments/src/PFD/PFD';
 import { FcuBus } from 'instruments/src/PFD/shared/FcuBusProvider';
 import { Arinc429Values } from './shared/ArincValueProvider';
 import { PFDSimvars } from './shared/PFDSimvarPublisher';
 import { LagFilter } from './PFDUtils';
+import { FmgcFlightPhase } from '@shared/flightphase';
+import { FlashOneHertz } from '../MsfsAvionicsCommon/FlashingElementUtils';
+import { FgBus } from './shared/FgBusProvider';
 
 // FIXME true ref
 export class LandingSystem extends DisplayComponent<{ bus: ArincEventBus; instrument: BaseInstrument }> {
@@ -92,6 +95,9 @@ export class LandingSystem extends DisplayComponent<{ bus: ArincEventBus; instru
             d="m 114.84887,80.06669 v 1.51188 h -8.43284 v -1.51188 z"
           />
         </g>
+        <g>
+          <LsReminderIndicator bus={this.props.bus} />
+        </g>
         <g id="DeviationGroup" class={{ HiddenElement: this.lsVisible }}>
           <g id="LateralDeviationGroup" class={{ HiddenElement: this.isLDevHidden }}>
             <LDevIndicator bus={this.props.bus} />
@@ -741,3 +747,59 @@ class MarkerBeaconIndicator extends DisplayComponent<{ bus: ArincEventBus }> {
     );
   }
 }
+
+class LsReminderIndicator extends DisplayComponent<{ bus: ArincEventBus }> {
+  private readonly sub = this.props.bus.getSubscriber<PFDSimvars & FcuBus & FgBus>();
+
+  private readonly glsMlsFlsOrLocVnavInstalled = Subject.create(false);
+
+  private readonly fwcFlightPhase = ConsumerSubject.create(this.sub.on('fwcFlightPhase'), 0);
+
+  private readonly fmgcFlightPhase = ConsumerSubject.create(this.sub.on('fmgcFlightPhase'), FmgcFlightPhase.Preflight);
+
+  private readonly fmgcDiscreteWord2 = Arinc429ConsumerSubject.create(this.sub.on('fmgcDiscreteWord3'));
+
+  private readonly fmgcDiscreteWord4 = Arinc429ConsumerSubject.create(this.sub.on('fmgcDiscreteWord4'));
+
+  private readonly landModeArmedOrActive = MappedSubject.create(
+    ([fmgcDiscreteWord2, fmgcDiscreteWord4]) =>
+      fmgcDiscreteWord4.bitValueOr(14, false) || fmgcDiscreteWord2.bitValueOr(20, false),
+    this.fmgcDiscreteWord2,
+    this.fmgcDiscreteWord4,
+  );
+
+  private readonly fcuEisDiscreteWord2 = Arinc429ConsumerSubject.create(this.sub.on('fcuEisDiscreteWord2'));
+
+  private readonly lsPushed = this.fcuEisDiscreteWord2.map((w) => w.bitValueOr(22, false));
+
+  private readonly lsReminderVisible = MappedSubject.create(
+    ([fwcPhase, fmgcPhase, landModeArmedOrActive, lsPushed]) => {
+      return (
+        landModeArmedOrActive &&
+        fmgcPhase === FmgcFlightPhase.Approach &&
+        !lsPushed && // TODO Check if LOC or G/S scales are invalid
+        fwcPhase !== 8 &&
+        fwcPhase !== 9 &&
+        fwcPhase !== 10
+      );
+    },
+    this.fwcFlightPhase,
+    this.fmgcFlightPhase,
+    this.landModeArmedOrActive,
+    this.lsPushed,
+  );
+
+  onAfterRender(node: VNode): void {
+    super.onAfterRender(node);
+  }
+
+  render(): VNode {
+    return (
+      <FlashOneHertz bus={this.props.bus} flashDuration={9} visible={this.lsReminderVisible}>
+        <text class="FontLargest Amber EndAlign" x="112.80" y="124.8">
+          {this.glsMlsFlsOrLocVnavInstalled.map((v) => (v ? 'LS' : 'ILS'))}
+        </text>
+      </FlashOneHertz>
+    );
+  }
+}
diff --git a/fbw-a380x/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx b/fbw-a380x/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
index ffb26b26731..7a7d6b2fa50 100644
--- a/fbw-a380x/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
+++ b/fbw-a380x/src/systems/instruments/src/PFD/LandingSystemIndicator.tsx
@@ -13,6 +13,7 @@ import { Arinc429Word } from '@flybywiresim/fbw-sdk';
 import { Arinc429Values } from './shared/ArincValueProvider';
 import { PFDSimvars } from './shared/PFDSimvarPublisher';
 import { LagFilter } from './PFDUtils';
+import { FmgcFlightPhase } from '@shared/flightphase';
 
 export class LandingSystem extends DisplayComponent<{ bus: EventBus; instrument: BaseInstrument }> {
   private lsButtonPressedVisibility = false;
@@ -95,11 +96,14 @@ export class LandingSystem extends DisplayComponent<{ bus: EventBus; instrument:
             <LocalizerIndicator bus={this.props.bus} instrument={this.props.instrument} />
             <GlideSlopeIndicator bus={this.props.bus} instrument={this.props.instrument} />
             <MarkerBeaconIndicator bus={this.props.bus} />
-            <LsReminder bus={this.props.bus} />
+            <LsTitle bus={this.props.bus} />
           </g>
-
           <path ref={this.gsReferenceLine} class="Yellow Fill" d="m115.52 80.067v1.5119h-8.9706v-1.5119z" />
         </g>
+
+        <g>
+          <LsReminderIndicator bus={this.props.bus} />
+        </g>
         <g id="DeviationGroup" ref={this.deviationGroup} style="display: none">
           <g id="LateralDeviationGroup" ref={this.ldevRef} style="display: none">
             <LDevIndicator bus={this.props.bus} />
@@ -609,14 +613,14 @@ class MarkerBeaconIndicator extends DisplayComponent<{ bus: EventBus }> {
   }
 }
 
-class LsReminder extends DisplayComponent<{ bus: EventBus }> {
-  private readonly lsReminderRef = FSComponent.createRef<SVGTextElement>();
+class LsTitle extends DisplayComponent<{ bus: EventBus }> {
+  private readonly lsTitle = FSComponent.createRef<SVGTextElement>();
 
   private readonly hasLoc = ConsumerSubject.create(null, false);
 
   private readonly lsButton = ConsumerSubject.create(null, false);
 
-  private readonly ilsReminderShown = MappedSubject.create(
+  private readonly ilsTitleShown = MappedSubject.create(
     ([hasLoc, lsButton]) => hasLoc && lsButton,
     this.hasLoc,
     this.lsButton,
@@ -631,20 +635,71 @@ class LsReminder extends DisplayComponent<{ bus: EventBus }> {
     this.lsButton.setConsumer(sub.on(getDisplayIndex() === 2 ? 'ls2Button' : 'ls1Button').whenChanged());
 
     // normally the ident and freq should be always displayed when an ILS freq is set, but currently it only show when we have a signal
-    this.ilsReminderShown.sub((it) => {
+    this.ilsTitleShown.sub((it) => {
       if (it) {
-        this.lsReminderRef.instance.style.display = 'inline';
+        this.lsTitle.instance.style.display = 'inline';
       } else {
-        this.lsReminderRef.instance.style.display = 'none';
+        this.lsTitle.instance.style.display = 'none';
       }
     });
   }
 
   render(): VNode {
     return (
-      <text class="FontLargest Magenta MiddleAlign Blink9Seconds" ref={this.lsReminderRef} x="104" y="126">
+      <text class="FontLargest Magenta MiddleAlign Blink9Seconds" ref={this.lsTitle} x="104" y="126">
         ILS
       </text>
     );
   }
 }
+
+class LsReminderIndicator extends DisplayComponent<{ bus: EventBus }> {
+  private readonly sub = this.props.bus.getSubscriber<PFDSimvars>();
+
+  private readonly lsReminder = FSComponent.createRef<SVGTextElement>();
+
+  private readonly fwcFlightPhase = ConsumerSubject.create(this.sub.on('fwcFlightPhase'), 0);
+
+  private readonly fmgcFlightPhase = ConsumerSubject.create(this.sub.on('fmgcFlightPhase'), FmgcFlightPhase.Preflight);
+
+  private readonly approachModePushed = ConsumerSubject.create(this.sub.on('fcuApproachModeActive'), false);
+
+  private readonly lsButton = ConsumerSubject.create(null, false);
+
+  private readonly lsReminderVisible = MappedSubject.create(
+    ([fwcPhase, fmgcPhase, approachModePushed, lsPushed]) => {
+      return (
+        approachModePushed &&
+        fmgcPhase === FmgcFlightPhase.Approach &&
+        !lsPushed && // TODO Check if LOC or G/S scales are invalid
+        fwcPhase !== 10 &&
+        fwcPhase !== 11 &&
+        fwcPhase !== 12
+      );
+    },
+    this.fwcFlightPhase,
+    this.fmgcFlightPhase,
+    this.approachModePushed,
+    this.lsButton,
+  );
+
+  onAfterRender(node: VNode): void {
+    super.onAfterRender(node);
+    this.lsButton.setConsumer(this.sub.on(getDisplayIndex() === 2 ? 'ls2Button' : 'ls1Button'));
+    this.lsReminderVisible.sub((v) => {
+      if (v) {
+        this.lsReminder.instance.style.display = 'inline';
+      } else {
+        this.lsReminder.instance.style.display = 'none';
+      }
+    });
+  }
+
+  render(): VNode {
+    return (
+      <text class="FontLargest Amber Blink9Seconds" x="104.33" y="124.8" ref={this.lsReminder}>
+        LS
+      </text>
+    );
+  }
+}
diff --git a/fbw-a380x/src/systems/instruments/src/PFD/shared/PFDSimvarPublisher.tsx b/fbw-a380x/src/systems/instruments/src/PFD/shared/PFDSimvarPublisher.tsx
index de69cc28db8..da27bf833b9 100644
--- a/fbw-a380x/src/systems/instruments/src/PFD/shared/PFDSimvarPublisher.tsx
+++ b/fbw-a380x/src/systems/instruments/src/PFD/shared/PFDSimvarPublisher.tsx
@@ -167,6 +167,7 @@ export interface PFDSimvars {
   spoilersArmed: boolean;
   fcuLeftVelocityVectorOn: boolean;
   fcuRightVelocityVectorOn: boolean;
+  fcuApproachModeActive: boolean;
 }
 
 export enum PFDVars {
@@ -334,6 +335,7 @@ export enum PFDVars {
   spoilersArmed = 'L:A32NX_SPOILERS_ARMED',
   fcuLeftVelocityVectorOn = 'L:A380X_EFIS_L_VV_BUTTON_IS_ON',
   fcuRightVelocityVectorOn = 'L:A380X_EFIS_R_VV_BUTTON_IS_ON',
+  fcuApproachModeActive = 'L:A32NX_FCU_APPR_MODE_ACTIVE',
 }
 
 /** A publisher to poll and publish nav/com simvars. */
@@ -500,6 +502,7 @@ export class PFDSimvarPublisher extends UpdatableSimVarPublisher<PFDSimvars> {
     ['spoilersArmed', { name: PFDVars.spoilersArmed, type: SimVarValueType.Bool }],
     ['fcuLeftVelocityVectorOn', { name: PFDVars.fcuLeftVelocityVectorOn, type: SimVarValueType.Bool }],
     ['fcuRightVelocityVectorOn', { name: PFDVars.fcuRightVelocityVectorOn, type: SimVarValueType.Bool }],
+    ['fcuApproachModeActive', { name: PFDVars.fcuApproachModeActive, type: SimVarValueType.Bool }],
   ]);
 
   public constructor(bus: EventBus) {