diff --git a/board/config.h b/board/config.h
index 56703522..ef9ffcb8 100644
--- a/board/config.h
+++ b/board/config.h
@@ -11,7 +11,6 @@
 //#define DEBUG_FAN
 
 #define CAN_INIT_TIMEOUT_MS 500U
-#define DEEPSLEEP_WAKEUP_DELAY 3U
 #define USBPACKET_MAX_SIZE 0x40U
 #define MAX_CAN_MSGS_PER_USB_BULK_TRANSFER 51U
 #define MAX_CAN_MSGS_PER_SPI_BULK_TRANSFER 170U
diff --git a/board/main.c b/board/main.c
index 0d66b52d..8e6434e6 100644
--- a/board/main.c
+++ b/board/main.c
@@ -33,7 +33,6 @@
 
 bool check_started(void) {
   bool started = current_board->check_ignition() || ignition_can;
-  ignition_seen |= started;
   return started;
 }
 
@@ -292,20 +291,6 @@ void tick_handler(void) {
   TICK_TIMER->SR = 0;
 }
 
-void EXTI_IRQ_Handler(void) {
-  if (check_exti_irq()) {
-    exti_irq_clear();
-    clock_init();
-
-    set_power_save_state(POWER_SAVE_STATUS_DISABLED);
-    deepsleep_allowed = false;
-    heartbeat_counter = 0U;
-    usb_soft_disconnect(false);
-
-    NVIC_EnableIRQ(TICK_TIMER_IRQ);
-  }
-}
-
 int main(void) {
   // Init interrupt table
   init_interrupts(true);
@@ -407,18 +392,6 @@ int main(void) {
         }
       #endif
     } else {
-      if (deepsleep_allowed && !usb_enumerated && !check_started() && ignition_seen && (heartbeat_counter > 20U)) {
-        usb_soft_disconnect(true);
-        fan_set_power(0U);
-        NVIC_DisableIRQ(TICK_TIMER_IRQ);
-        delay(512000U);
-
-        // Init IRQs for CAN transceiver and ignition line
-        exti_irq_init();
-
-        // STOP mode
-        SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
-      }
       __WFI();
       SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
     }
diff --git a/board/main_comms.h b/board/main_comms.h
index 830ef83b..4c5d5096 100644
--- a/board/main_comms.h
+++ b/board/main_comms.h
@@ -374,10 +374,6 @@ int comms_control_handler(ControlPacket_t *req, uint8_t *resp) {
         UNUSED(ret);
       }
       break;
-    // **** 0xfb: allow highest power saving mode (stop) to be entered
-    case 0xfb:
-      deepsleep_allowed = true;
-      break;
     // **** 0xfc: set CAN FD non-ISO mode
     case 0xfc:
       if ((req->param1 < PANDA_CAN_CNT) && current_board->has_canfd) {
diff --git a/board/main_declarations.h b/board/main_declarations.h
index 55e37636..fa860b86 100644
--- a/board/main_declarations.h
+++ b/board/main_declarations.h
@@ -20,10 +20,6 @@ uint32_t heartbeat_counter = 0;
 bool heartbeat_lost = false;
 bool heartbeat_disabled = false;            // set over USB
 
-// Enter deep sleep mode
-bool deepsleep_allowed = false;
-bool ignition_seen = false;
-
 // siren state
 bool siren_enabled = false;
 uint32_t siren_countdown = 0; // siren plays while countdown > 0
diff --git a/board/stm32f4/llexti.h b/board/stm32f4/llexti.h
deleted file mode 100644
index 6de13ab7..00000000
--- a/board/stm32f4/llexti.h
+++ /dev/null
@@ -1,56 +0,0 @@
-void EXTI_IRQ_Handler(void);
-
-void exti_irq_init(void) {
-  SYSCFG->EXTICR[2] &= ~(SYSCFG_EXTICR3_EXTI8_Msk);
-  if (harness.status == HARNESS_STATUS_FLIPPED) {
-    // CAN2_RX
-    current_board->enable_can_transceiver(3U, false);
-    SYSCFG->EXTICR[2] |=  (SYSCFG_EXTICR3_EXTI8_PA);
-
-    // IRQ on falling edge for PC3 (SBU2, EXTI3)
-    SYSCFG->EXTICR[0] &= ~(SYSCFG_EXTICR1_EXTI3_Msk);
-    SYSCFG->EXTICR[0] |=  (SYSCFG_EXTICR1_EXTI3_PC);
-    EXTI->IMR  |=  EXTI_IMR_MR3;
-    EXTI->RTSR &=  ~EXTI_RTSR_TR3; // rising edge
-    EXTI->FTSR |=  EXTI_FTSR_TR3; // falling edge
-    REGISTER_INTERRUPT(EXTI3_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI3_IRQn);
-  } else {
-    // CAN0_RX
-    current_board->enable_can_transceiver(1U, false);
-    SYSCFG->EXTICR[2] |=  (SYSCFG_EXTICR3_EXTI8_PB);
-
-    // IRQ on falling edge for PC0 (SBU1, EXTI0)
-    SYSCFG->EXTICR[0] &= ~(SYSCFG_EXTICR1_EXTI0_Msk);
-    SYSCFG->EXTICR[0] |=  (SYSCFG_EXTICR1_EXTI0_PC);
-    EXTI->IMR  |=  EXTI_IMR_MR0;
-    EXTI->RTSR &=  ~EXTI_RTSR_TR0; // rising edge
-    EXTI->FTSR |=  EXTI_FTSR_TR0; // falling edge
-    REGISTER_INTERRUPT(EXTI0_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI0_IRQn);
-  }
-  // CAN0 or CAN2 IRQ on falling edge (EXTI8)
-  EXTI->IMR  |=  EXTI_IMR_MR8;
-  EXTI->RTSR &=  ~EXTI_RTSR_TR8; // rising edge
-  EXTI->FTSR |=  EXTI_FTSR_TR8; // falling edge
-  REGISTER_INTERRUPT(EXTI9_5_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-  NVIC_EnableIRQ(EXTI9_5_IRQn);
-}
-
-bool check_exti_irq(void) {
-  return ((EXTI->PR & EXTI_PR_PR8) || (EXTI->PR & EXTI_PR_PR3) || (EXTI->PR & EXTI_PR_PR0));
-}
-
-void exti_irq_clear(void) {
-  // Clear pending bits
-  EXTI->PR |= EXTI_PR_PR8;
-  EXTI->PR |= EXTI_PR_PR0;
-  EXTI->PR |= EXTI_PR_PR3;
-  EXTI->PR |= EXTI_PR_PR22;
-
-  // Disable all active EXTI IRQs
-  EXTI->IMR &= ~EXTI_IMR_MR8;
-  EXTI->IMR &= ~EXTI_IMR_MR0;
-  EXTI->IMR &= ~EXTI_IMR_MR3;
-  EXTI->IMR &= ~EXTI_IMR_MR22;
-}
diff --git a/board/stm32f4/stm32f4_config.h b/board/stm32f4/stm32f4_config.h
index 3c6e547c..85baff25 100644
--- a/board/stm32f4/stm32f4_config.h
+++ b/board/stm32f4/stm32f4_config.h
@@ -65,10 +65,6 @@
   #include "stm32f4/lluart.h"
 #endif
 
-#if defined(PANDA) && !defined(BOOTSTUB)
-  #include "stm32f4/llexti.h"
-#endif
-
 #ifdef BOOTSTUB
   #include "stm32f4/llflash.h"
 #else
diff --git a/board/stm32h7/llexti.h b/board/stm32h7/llexti.h
deleted file mode 100644
index 46d0acab..00000000
--- a/board/stm32h7/llexti.h
+++ /dev/null
@@ -1,63 +0,0 @@
-void EXTI_IRQ_Handler(void);
-
-void exti_irq_init(void) {
-  if (harness.status == HARNESS_STATUS_FLIPPED) {
-    // CAN2_RX IRQ on falling edge (EXTI10)
-    current_board->enable_can_transceiver(3U, false);
-    SYSCFG->EXTICR[2] &= ~(SYSCFG_EXTICR3_EXTI10_Msk);
-    SYSCFG->EXTICR[2] |=  (SYSCFG_EXTICR3_EXTI10_PG);
-    EXTI->IMR1  |=  EXTI_IMR1_IM10;
-    EXTI->RTSR1 &=  ~EXTI_RTSR1_TR10; // rising edge
-    EXTI->FTSR1 |=  EXTI_FTSR1_TR10; // falling edge
-
-    // IRQ on falling edge for PA1 (SBU2, EXTI1)
-    SYSCFG->EXTICR[0] &= ~(SYSCFG_EXTICR1_EXTI1_Msk);
-    SYSCFG->EXTICR[0] |=  (SYSCFG_EXTICR1_EXTI1_PA);
-    EXTI->IMR1  |=  EXTI_IMR1_IM1;
-    EXTI->RTSR1 &=  ~EXTI_RTSR1_TR1; // rising edge
-    EXTI->FTSR1 |=  EXTI_FTSR1_TR1; // falling edge
-    REGISTER_INTERRUPT(EXTI1_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI1_IRQn);
-    REGISTER_INTERRUPT(EXTI15_10_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI15_10_IRQn);
-  } else {
-    // CAN0_RX IRQ on falling edge (EXTI8)
-    current_board->enable_can_transceiver(1U, false);
-    SYSCFG->EXTICR[2] &= ~(SYSCFG_EXTICR3_EXTI8_Msk);
-    SYSCFG->EXTICR[2] |=  (SYSCFG_EXTICR3_EXTI8_PB);
-    EXTI->IMR1  |=  EXTI_IMR1_IM8;
-    EXTI->RTSR1 &=  ~EXTI_RTSR1_TR8; // rising edge
-    EXTI->FTSR1 |=  EXTI_FTSR1_TR8; // falling edge
-
-    // IRQ on falling edge for PC4 (SBU1, EXTI4)
-    SYSCFG->EXTICR[1] &= ~(SYSCFG_EXTICR2_EXTI4_Msk);
-    SYSCFG->EXTICR[1] |=  (SYSCFG_EXTICR2_EXTI4_PC);
-    EXTI->IMR1  |=  EXTI_IMR1_IM4;
-    EXTI->RTSR1 &=  ~EXTI_RTSR1_TR4; // rising edge
-    EXTI->FTSR1 |=  EXTI_FTSR1_TR4; // falling edge
-    REGISTER_INTERRUPT(EXTI4_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI4_IRQn);
-    REGISTER_INTERRUPT(EXTI9_5_IRQn, EXTI_IRQ_Handler, 100U, FAULT_INTERRUPT_RATE_EXTI)
-    NVIC_EnableIRQ(EXTI9_5_IRQn);
-  }
-}
-
-bool check_exti_irq(void) {
-  return ((EXTI->PR1 & EXTI_PR1_PR8) || (EXTI->PR1 & EXTI_PR1_PR10) || (EXTI->PR1 & EXTI_PR1_PR1) || (EXTI->PR1 & EXTI_PR1_PR4));
-}
-
-void exti_irq_clear(void) {
-  // Clear pending bits
-  EXTI->PR1 |= EXTI_PR1_PR8;
-  EXTI->PR1 |= EXTI_PR1_PR10;
-  EXTI->PR1 |= EXTI_PR1_PR4;
-  EXTI->PR1 |= EXTI_PR1_PR1; // works
-  EXTI->PR1 |= EXTI_PR1_PR19; // works
-
-  // Disable all active EXTI IRQs
-  EXTI->IMR1 &= ~EXTI_IMR1_IM8;
-  EXTI->IMR1 &= ~EXTI_IMR1_IM10;
-  EXTI->IMR1 &= ~EXTI_IMR1_IM4;
-  EXTI->IMR1 &= ~EXTI_IMR1_IM1;
-  EXTI->IMR1 &= ~EXTI_IMR1_IM19;
-}
diff --git a/board/stm32h7/stm32h7_config.h b/board/stm32h7/stm32h7_config.h
index 6f36a5aa..64f14984 100644
--- a/board/stm32h7/stm32h7_config.h
+++ b/board/stm32h7/stm32h7_config.h
@@ -76,10 +76,6 @@ separate IRQs for RX and TX.
 #include "stm32h7/board.h"
 #include "stm32h7/clock.h"
 
-#if !defined(BOOTSTUB) && defined(PANDA)
-  #include "stm32h7/llexti.h"
-#endif
-
 #ifdef BOOTSTUB
   #include "stm32h7/llflash.h"
 #else
diff --git a/python/__init__.py b/python/__init__.py
index ba1f107d..b69b30ea 100644
--- a/python/__init__.py
+++ b/python/__init__.py
@@ -751,9 +751,6 @@ class Panda:
   def set_power_save(self, power_save_enabled=0):
     self._handle.controlWrite(Panda.REQUEST_OUT, 0xe7, int(power_save_enabled), 0, b'')
 
-  def enable_deepsleep(self):
-    self._handle.controlWrite(Panda.REQUEST_OUT, 0xfb, 0, 0, b'')
-
   def set_safety_mode(self, mode=SAFETY_SILENT, param=0):
     self._handle.controlWrite(Panda.REQUEST_OUT, 0xdc, mode, param, b'')