diff --git a/src/Command/MaintenanceModeCommand.php b/src/Command/MaintenanceModeCommand.php
new file mode 100644
index 00000000..37f59af1
--- /dev/null
+++ b/src/Command/MaintenanceModeCommand.php
@@ -0,0 +1,141 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2026 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Command;
+
+use App\Services\System\UpdateExecutor;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+#[AsCommand('partdb:maintenance_mode', 'Enable/disable maintenance mode and set a message')]
+class MaintenanceModeCommand extends Command
+{
+    public function __construct(
+        private readonly UpdateExecutor $updateExecutor
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure(): void
+    {
+        $this
+            ->setDefinition([
+                new InputOption('enable', null, InputOption::VALUE_NONE, 'Enable maintenance mode'),
+                new InputOption('disable', null, InputOption::VALUE_NONE, 'Disable maintenance mode'),
+                new InputOption('status', null, InputOption::VALUE_NONE, 'Show current maintenance mode status'),
+                new InputOption('message', null, InputOption::VALUE_REQUIRED, 'Optional maintenance message (explicit option)'),
+                new InputArgument('message_arg', InputArgument::OPTIONAL, 'Optional maintenance message as a positional argument (preferred when writing message directly)')
+            ]);
+    }
+
+    public function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        $enable = (bool)$input->getOption('enable');
+        $disable = (bool)$input->getOption('disable');
+        $status = (bool)$input->getOption('status');
+
+        // Accept message either via --message option or as positional argument
+        $optionMessage = $input->getOption('message');
+        $argumentMessage = $input->getArgument('message_arg');
+
+        // Prefer explicit --message option, otherwise use positional argument if provided
+        $message = null;
+        if (is_string($optionMessage) && $optionMessage !== '') {
+            $message = $optionMessage;
+        } elseif (is_string($argumentMessage) && $argumentMessage !== '') {
+            $message = $argumentMessage;
+        }
+
+        // If no action provided, show help
+        if (!$enable && !$disable && !$status) {
+            $io->text('Maintenance mode command. See usage below:');
+            $this->printHelp($io);
+            return Command::SUCCESS;
+        }
+
+        if ($enable && $disable) {
+            $io->error('Conflicting options: specify either --enable or --disable, not both.');
+            return Command::FAILURE;
+        }
+
+        try {
+            if ($status) {
+                if ($this->updateExecutor->isMaintenanceMode()) {
+                    $info = $this->updateExecutor->getMaintenanceInfo();
+                    $reason = $info['reason'] ?? 'Unknown reason';
+                    $enabledAt = $info['enabled_at'] ?? 'Unknown time';
+
+                    $io->success(sprintf('Maintenance mode is ENABLED (since %s).', $enabledAt));
+                    $io->text(sprintf('Reason: %s', $reason));
+                } else {
+                    $io->success('Maintenance mode is DISABLED.');
+                }
+
+                // If only status requested, exit
+                if (!$enable && !$disable) {
+                    return Command::SUCCESS;
+                }
+            }
+
+            if ($enable) {
+                // Use provided message or fallback to a default English message
+                $reason = is_string($message) && $message !== ''
+                    ? $message
+                    : 'The system is temporarily unavailable due to maintenance.';
+
+                $this->updateExecutor->enableMaintenanceMode($reason);
+
+                $io->success(sprintf('Maintenance mode enabled. Reason: %s', $reason));
+            }
+
+            if ($disable) {
+                $this->updateExecutor->disableMaintenanceMode();
+                $io->success('Maintenance mode disabled.');
+            }
+
+            return Command::SUCCESS;
+        } catch (\Throwable $e) {
+            $io->error(sprintf('Unexpected error: %s', $e->getMessage()));
+            return Command::FAILURE;
+        }
+    }
+
+    private function printHelp(SymfonyStyle $io): void
+    {
+        $io->writeln('');
+        $io->writeln('Usage:');
+        $io->writeln('  php bin/console partdb:maintenance_mode --enable [--message="Maintenance message"]');
+        $io->writeln('  php bin/console partdb:maintenance_mode --enable "Maintenance message"');
+        $io->writeln('  php bin/console partdb:maintenance_mode --disable');
+        $io->writeln('  php bin/console partdb:maintenance_mode --status');
+        $io->writeln('');
+    }
+
+}
diff --git a/translations/messages.en.xlf b/translations/messages.en.xlf
index 6cc1ad05..b6537a5f 100644
--- a/translations/messages.en.xlf
+++ b/translations/messages.en.xlf
@@ -14268,7 +14268,7 @@ Please note that this system is currently experimental, and the synonyms defined
     <unit id="BlR_EQc" name="settings.ips.buerklin.help">
       <segment state="translated">
         <source>settings.ips.buerklin.help</source>
-        <target>Buerklin-API access limits: 
+        <target>Buerklin-API access limits:
 100 requests/minute per IP address
 Buerklin-API Authentication server:
 10 requests/minute per IP address</target>