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AI-overzicht
Four blinking LEDs or a 4-times flashing indicator on a Siemens iQ500 dishwasher (such as model SX658X03TE) typically points to a water leakage in the base pan or a water protection system (AquaStop / E15 error).
When water accumulates in the bottom tray underneath the washing tub, a safety float switch rises and cuts off the water supply to prevent flooding.
What you can do:
1. Turn off the machine and water supply:
• Press the main power switch to turn the dishwasher off.
• Close the water tap completely.
• Unplug the power cord or switch off the corresponding circuit breaker for safety.
2. Perform a hard reset:
• Leave the unit disconnected from power for about 5 to 10 minutes.
• Reconnect the power, turn the machine back on, and hold the Start / Reset button for 3 seconds if prompted to clear the cycle.
3. Check for water in the base (E15 / leak):
• If the blinking returns immediately, water is likely sitting in the bottom base tray.
• This can happen due to an internal leak (e.g., from the circulation pump or hoses) or excessive foam/overflow from the door seal.
• Note: BSH/Siemens safety guidelines advise against disassembling internal components or handling active leaks yourself. You can request official support or schedule a repair via the Siemens Home Appliances Service Page.